Email outreach can deliver an impressive $42 ROI for every $1 spent. But without preparation, your emails might never reach the inbox - 20% of legitimate emails fail to deliver, and only 24% of cold sales emails get opened. Here's how to fix that.
| Feature | Shared IP | Dedicated IP |
|---|---|---|
| Cost | Affordable, included | Higher, billed separately |
| Reputation | Shared by users | Controlled by you |
| Setup | Ready to use | Requires warm-up |
| Volume Suitability | Low to moderate | High-volume senders |
Follow these steps to maximize deliverability, boost response rates, and protect your sender reputation. Ready to dive deeper? Let’s break it all down.
Your email infrastructure forms the backbone of your email campaigns. Without a strong setup, even the best-crafted messages could end up blocked or in spam folders.
To start, secure your email-sending channels with proper authentication protocols. These protocols - SPF, DKIM, and DMARC - help ensure your emails are legitimate and protect against spam filters and spoofing attempts.
Regularly review DMARC reports to identify authentication problems or misuse of your domain. Setting up a dedicated email address or group to handle these reports can help you stay on top of any issues and fine-tune your setup.
If you’re using third-party services to send emails, make sure they’re included in your SPF record. Be cautious of the SPF record’s 10-DNS-lookup limit - if you exceed it, you’ll need to flatten your SPF record to avoid errors.
The type of IP address you use - shared or dedicated - can have a big impact on your email deliverability and sender reputation. Here’s a quick comparison to help you decide:
| Feature | Shared IP | Dedicated IP |
|---|---|---|
| Cost | More affordable; often included in basic plans | Higher cost; billed separately |
| IP Reputation | Shared among multiple users | Controlled solely by you |
| Setup & Warm-up | Ready to use immediately | Requires gradual warm-up |
| Volume Suitability | Best for low to moderate volumes | Ideal for high-volume senders |
| Maintenance | Minimal upkeep | Requires ongoing monitoring |
For smaller email volumes, shared IPs are a budget-friendly option since the provider manages the reputation. On the other hand, if you’re sending large volumes or need more control, a dedicated IP is worth considering - though it requires careful setup and a warm-up period. Costs can range from $2.50–$15/month for shared IPs, while dedicated IPs may cost over $100/month depending on the provider.
Protect your primary domain’s reputation by using a secondary domain for email outreach. This strategy creates a safety net, ensuring that any issues - like spam reports or triggered filters - don’t negatively impact your main business domain.
Choose a secondary domain that’s similar to your primary one but distinct enough to stand out. For example, if your main domain is techcorp.com, you could use techcorp.net, techcorp.org, or even a subdomain like outreach.techcorp.com.
To maintain brand consistency, set up redirects from your secondary domain to your main website for landing pages or contact information. This keeps the connection to your brand intact while keeping the domains technically separate in the eyes of email providers.
Warm up your secondary domain gradually to build its reputation. Just like with your primary domain, set up SPF, DKIM, and DMARC records to authenticate it properly. Monitor the domain’s reputation regularly and adjust your sending practices as needed.
If the technical setup feels overwhelming, platforms like Infraforge can simplify the process by providing pre-warmed domains and automated DNS configurations. This makes it easier to implement a secondary domain strategy without diving into complex manual setups.
A strong sender reputation is the backbone of successful email outreach. It’s what determines whether your emails land in inboxes or get flagged as spam. Without it, even the most compelling emails may never reach their audience.
When starting with a new domain, you can’t just dive in and send thousands of emails at once. This is where domain warming comes in - gradually increasing your email volume to build trust with mailbox providers like Gmail, Yahoo, and Outlook. Typically, this process takes 4–8 weeks.
Start small. Send your best-performing messages to your most engaged recipients - those who are most likely to open and interact with your emails. Begin with 50–100 emails per provider, then double the volume initially. After that, increase by 20–50% daily while keeping a close eye on engagement rates and bounces. If you notice issues, scale back by 25–30% to avoid damaging your reputation.
Consistency is key. Instead of sending all your emails at once, establish a natural, steady sending pattern. Spread your emails across multiple providers and maintain a balance in volume, frequency, and engagement. Don’t forget to clean your email lists, encourage interactions, and follow authentication standards like SPF, DKIM, and DMARC.
In March 2023, Spotify collaborated with Mailchimp to tackle a bounce rate of 12.3%. By cleaning their 45-million subscriber database and using a new Email Verification API, they reduced their bounce rate to 2.1% in just 60 days. The changes, led by Sarah Chen, Spotify's Email Marketing Manager, boosted deliverability by 34% and added $2.3 million in revenue.
If the process feels overwhelming, platforms like Infraforge can help by providing pre-warmed domains and automated setups, saving you time and effort. Once your domain is warmed up, the focus shifts to maintaining a strong reputation.
Keeping tabs on your sender reputation is crucial to avoid deliverability issues. Several factors impact your reputation, including email volume, bounce rates, complaints, engagement, and whether your domain or IP has been blacklisted.
There are tools to make this easier. MXToolbox helps check if your domain or IP is blacklisted. The Spamhaus Project provides further insights into blacklisting, while Sender Score rates your reputation on a scale from 0 to 100 based on your sending history.
For those sending high volumes of email, Google Postmaster Tools and Microsoft SNDS offer detailed data specifically for Gmail and Outlook users. Tools like GlockApps and MXToolbox also provide a comprehensive overview of your reputation.
In June 2022, Litmus experienced a steep drop in inbox placement - falling from 98–99% to below 90%. They identified Gmail as the issue and responded by sending emails only to their most engaged Gmail users. By gradually increasing email volume and monitoring engagement, they eventually regained their high inbox placement rates.
Proactively maintaining your reputation is just as important as monitoring it. Regularly clean your email lists to remove invalid addresses and disengaged subscribers. Make sure your emails include a clear and easy unsubscribe option, and focus on creating relevant, engaging content. Avoid misleading subject lines or overly promotional language - your audience and mailbox providers will thank you.
Once your technical setup and sender reputation are in order, the next step is to focus on verifying and cleaning your recipient data. This step is crucial because outdated or invalid email addresses can significantly harm your deliverability.
Email lists naturally degrade over time - about 22.5% annually - and 2% of contacts become invalid every month. These outdated addresses lead to hard bounces, which can damage your sender reputation and make future outreach efforts less effective .
One of the best ways to ensure your email list stays clean is by using email validation tools. These tools help identify problematic addresses, such as non-existent emails, typos, disposable accounts, and role-based addresses that can hurt your campaigns.
Here are some standout tools in the market, each offering unique benefits:
| Tool | Monthly Plans | Pay-as-You-Go | Key Strength | User Rating |
|---|---|---|---|---|
| NeverBounce | N/A | $0.008/email | 99.9% accuracy | 4.4/5 |
| ZeroBounce | $15/month | $0.008/credit | Comprehensive features | 4.7/5 |
| Emailable | $25.50/month | $0.006/credit | Speed & integrations | 4.8/5 |
| Clearout | $31.50/month | $0.007/credit | Budget-friendly | 4.7/5 |
| Hunter | $34/month | N/A | Feature-rich platform | 4.5/5 |
These tools typically offer bulk verification for existing lists and real-time APIs to validate email addresses as they’re entered into forms. For instance, NeverBounce boasts a 99.9% accuracy rate, while Emailable is known for its speed, processing emails in just 0.012 seconds per address. Many tools also integrate seamlessly with marketing platforms, making the process even more efficient.
Here’s what Isamar Batista, VP of Marketing & CRM at Shoedazzle, had to say about the importance of validation:
"If you rely on email marketing as a source of traffic and revenue, it is imperative that you are acquiring valid email addresses. Kickbox is a cost-efficient way to help you do that. You set it and forget it and reap the benefits of a healthy email list."
Improving your list quality through validation can boost deliverability rates by up to 25%. Plus, businesses often see a 400% return on investment by reducing wasted sends and improving engagement metrics.
Even valid email addresses can pose challenges. Role-based addresses, like info@company.com or support@business.org, are often shared among multiple recipients. These addresses are less likely to engage with your emails and tend to generate higher spam complaint rates.
Catch-all addresses, on the other hand, accept emails sent to any address within a domain, even if the specific address doesn’t exist. While emails to these addresses may not bounce, there’s no guarantee they’ll be read. Catch-all addresses make up 8.6% of all verified addresses, and the median email list contains about 15.25% of these addresses.
To handle these issues:
Automating email verification for new signups and running bulk validations quarterly - especially before major campaigns - can keep your list in top shape. For example, digital marketer Rob Cairns saw his campaign open rate jump to 49% after cleaning a 2,300-address list.
Email regulations are more than just rules - they’re safeguards that protect both you and your recipients while helping to establish trust. Breaking these regulations can result in hefty fines, reaching up to $43,280 per email. But beyond avoiding penalties, compliance also boosts trust and improves email campaign performance.
Different regions enforce their own email laws, but three major frameworks dominate: CAN-SPAM (United States), GDPR (European Union), and CCPA (California). While each has unique requirements, they share core principles like transparency, consent, and respecting user rights.
For example, GDPR mandates explicit opt-in consent, whereas CAN-SPAM permits implied consent as long as there’s an opt-out option. The stakes are high - GDPR violations can lead to fines of up to €20 million or 4% of global annual revenue, making compliance critical for businesses targeting European audiences.
Compliance isn’t just about avoiding fines. According to Campaign Monitor’s 2023 Email Benchmark Report, permission-based campaigns outperform non-compliant ones by 38% in open rates, 68% in click-through rates, and 33% in unsubscribe rates. This aligns with a growing concern among consumers: 79% of U.S. adults worry about how companies handle their data, and 52% have avoided products or services over privacy concerns.
| Requirement | CAN-SPAM (US) | GDPR (EU/EEA) | CCPA/CPRA (California) | CASL (Canada) | PECR (UK) |
|---|---|---|---|---|---|
| Consent Type Required | Implied consent; opt-out | Explicit opt-in required | Opt-out with deletion rights | Explicit opt-in required | Explicit opt-in with exceptions |
| Pre-checked Boxes Allowed | Yes | No | Yes | No | No |
| Unsubscribe Mechanism | Required in all emails | Required and easy to use | Required with deletion rights | Required in all messages | Required in all messages |
| Processing Time for Opt-outs | 10 business days | Immediate | 15 days for deletions | 10 business days | Immediate |
| Physical Address Requirement | Yes | Not specified | Not specified | Yes | Not specified |
| Penalties for Violations | Up to $46,517 per email | Up to €20M or 4% of revenue | $2,500-$7,500 per violation | Up to CAD $10M | Up to £500,000 |
Every email you send must include a simple, one-click unsubscribe option. The Federal Trade Commission emphasizes that emails must provide "a clear explanation for opting out". This isn’t just a legal necessity - it’s about respecting your audience and keeping your email list healthy.
Unsubscribing should be hassle-free. Recipients shouldn’t have to log in, provide additional information, or pay any fees. The unsubscribe mechanism must remain active for 30 days after the email is sent, and opt-out requests must be processed within 10 business days under CAN-SPAM.
If you’re sending more than 5,000 emails daily to Gmail accounts, major providers now require a 'List-Unsubscribe' header with a direct HTTPS link or email address for instant unsubscribing.
To make unsubscribing easy and visible:
When someone unsubscribes, confirm their request with a polite message thanking them for their engagement. Avoid including promotional content or trying to persuade them to stay. Instead, offer alternatives like SMS updates or a preference center where they can adjust their email preferences.
Another key compliance step is including your physical address in every email. This isn’t just a formality - it’s a legal requirement under laws like the CAN-SPAM Act. The FTC states: “Your message must include your valid physical postal address”. Including this information helps establish credibility and reassures recipients that your business is legitimate.
Your address can be:
The address should be valid, accurate, and clearly visible in every email, typically in the footer alongside the unsubscribe link and other company details. For businesses operating from home or remotely, using a registered P.O. Box or commercial mail service can maintain privacy while appearing professional.
By ensuring your address is prominently displayed, you reinforce trust and provide recipients with a way to contact you if needed. This small but vital step helps solidify your credibility as a legitimate business.
Taking these steps ensures your emails comply with regulations, keeping your campaigns effective and trustworthy as you continue refining your outreach strategy.
Once you've established a secure infrastructure and cleaned your recipient data, the next step is crafting email content that grabs attention, avoids spam filters, and drives engagement.
Dynamic fields let you automatically insert recipient-specific details, making your emails feel tailored and relevant. For example, XYZ Accounting Software Inc. uses fields like {Company_Name} and {Specific_Pain_Point} to customize subject lines and email content. A subject line might read: "Boost {Company_Name}'s Financial Efficiency With XYZ Software", while the body includes fields like {First_Name}, {Company_Name}, and {Specific_Pain_Point}.
Another example is ABC Co-Working Spaces, which targets early-stage startup founders with subject lines like "Exclusive Office Space for {Company_Name}". They pull data such as {INDUSTRY INVESTOR 1} and {INDUSTRY INVESTOR 2} from their internal records. Similarly, DEF Marketing Agency personalizes emails for recently funded companies with subject lines like "Turbocharge {Company_Name}'s Growth with DEF Marketing Agency", using fields like {FUNDING ROUND}, {ROUND GOALS}, and {LEAD INVESTOR}.
To make personalization even more effective, segment your subscriber list based on demographics, behavior, or interests. This allows you to send timely, relevant messages. Always test your emails to ensure dynamic fields work correctly and avoid using overly personal details that might breach privacy.
Once personalized, focus on optimizing your email's design.
A good balance between text and images is critical for ensuring your emails reach the inbox. Overusing images can lead to issues like emails being clipped, images not loading, or even being flagged as spam. Many email providers suggest maintaining at least a 60:40 text-to-image ratio, with Mailchimp recommending an 80:20 ratio for better deliverability. Aim for at least 400 characters (about 60–100 words) of text in your email body.
When using images, ensure they are optimized for mobile devices and include descriptive alt text. Alt text improves accessibility and ensures your message remains clear even if the images fail to load. Choose the right file format: JPGs are great for photos due to their compression, while PNGs work better for images containing text, despite their larger size.
Remember, spam filters often flag emails with too many images or no alt text. Including sufficient text ensures your email's content remains visible and effective, even if the visuals are blocked.
Spam filters are a major hurdle - nearly 20% of emails get flagged and sent to spam. These filters often target certain keywords or phrases that are frequently associated with spam.
To avoid this, test your email's HTML structure and content using tools like Litmus. These tools can preview how your campaign appears across different email clients and identify potential issues in your HTML. Gradually reintroduce elements like text, links, and images to ensure they don't trigger spam filters.
Failing to test for spam triggers can lead to undelivered emails and wasted effort. Keep an eye on your metrics, aiming for bounce rates below 5%. With proper testing and optimization, email marketing can deliver an impressive ROI - up to $42 for every dollar spent.
From here, you can refine your email design and testing processes to further improve deliverability.
Getting the timing right for your email outreach can mean the difference between being noticed or being ignored. Thoughtful scheduling and a well-planned sequence of follow-ups can boost engagement while keeping your emails out of spam folders.
Timing your emails to land when recipients are most likely to check their inbox can significantly improve open rates. Studies show that Tuesdays and Fridays often yield the best results for open, click-through, and conversion rates. Engagement tends to peak in the afternoon and early evening.
Here’s what the data says:
Interestingly, emails sent on Fridays tend to lead to more purchases. Keep in mind that optimal send times can vary across industries, so segmenting your list by geography and industry can help you target recipients when they’re most active.
To make the most of time zone-based scheduling:
Once your email timing is dialed in, it’s essential to manage how much you send. Jumping too quickly into high-volume campaigns can harm your sender reputation. Internet Service Providers (ISPs) closely monitor sending patterns, and sudden spikes in volume may trigger spam filters.
Start small and gradually increase your email volume, all while keeping a close eye on deliverability metrics. Research from lemlist, based on millions of cold outreach campaigns, found that sending 4 to 9 follow-up emails leads to the best reply rates. Follow-ups are crucial - 55% of email responses come from these follow-ups rather than the initial email.
Here’s a proven follow-up sequence:
It’s worth noting that after nine follow-ups, the response benefits drop off significantly.
Rob Pellow, digital experience director at Armadillo, highlights the importance of safeguarding your sender reputation:
"An IP reputation is hard to build, easy to lose, and hard to regain. Therefore, ensuring you are sending the best emails before they are sent will limit the damage caused, and monitoring, post-send, will allow fine-tuning - and it will allow you to know when further action needs to be taken to protect or improve your IP status."
To further protect your reputation:
Once your email campaign is up and running, keeping a close eye on its performance is essential. By tracking the right metrics and making smart tweaks, you can transform an average campaign into one that truly delivers.
Open and reply rates are your first indicators of how well your emails are connecting with recipients. Generally, a good open rate falls between 20-30%, while a strong click-through rate should be 5% or higher. However, reply rates have dropped significantly - more than 50% since 2019 - making it even more important to monitor and adapt.
"Emailing has become more challenging but not less effective; it just requires a more strategic approach."
If you notice open rates slipping, start by revisiting your subject lines. Personalized subject lines, for instance, can boost open rates by 50%. For reply rates, focus on making your content concise:
"Ensure your emails can be read within 30 seconds. Mine are never longer than three lines per email."
Personalization also plays a big role in response rates. Cold emails with advanced personalization see an 18% response rate, compared to just 9% for generic emails. Use tools like HubSpot or Mailchimp to dive deeper into your analytics and uncover trends.
Keep in mind that response rates vary across industries. Here’s a quick benchmark table to help you measure your performance:
| Industry | Reply Rate | Conversion Rate |
|---|---|---|
| Software | 0.5% | 1.5-3% |
| Marketing | 4.3% | 2-5% |
| eCommerce | 4.8% | 2.5-4.5% |
| Healthcare | 4.9% | 1-3% |
| Finance | 4.8% | 1-2.5% |
Engagement metrics are important, but don’t overlook bounce and complaint rates - they directly affect your sender reputation. A bounce rate below 2% is normal, while anything between 2% and 5% is a warning sign. Rates above 5% demand immediate attention.
For hard bounces, remove invalid addresses right away. Repeated soft bounces could indicate broader issues, so monitor those closely. The average bounce rate across industries is 0.63%. If your rate is significantly higher, dig into the data - are the bounces concentrated in specific domains or regions?
Complaint rates also matter. On average, 1 in 833 emails (0.12%) receives a complaint. Higher rates suggest recipients find your emails irrelevant or intrusive. To address this, set up feedback loops with major providers like Gmail, Yahoo, and Outlook. These tools notify you when emails are marked as spam, giving you real-time insights into potential problems.
Act quickly on these insights. High bounce or complaint rates can harm your sender reputation. Remove hard bounces, investigate soft bounce trends, and adjust your targeting or content if complaints are high. These steps will help ensure your future emails actually make it to inboxes.
Once you've optimized deliverability and performance tracking, scaling your email outreach requires more than just basic tools. When your campaigns surpass a few hundred emails per day, relying on a simple setup won't cut it. To scale effectively, you need to distribute your email volume across multiple domains and IPs while preserving the sender reputation you've carefully built. Here's how to configure your domains and automate management to ensure smooth scaling.
When handling large-scale campaigns, email rotation becomes essential for avoiding spam filters. This technique, also known as sender rotation, involves sending emails from multiple domains and IPs to distribute the load and improve deliverability. For instance, instead of sending 1,000 emails from one domain, you could divide them across five domains to reduce the risk of triggering spam defenses.
Here’s how you can implement domain and IP rotation:
Glassdoor provides a great example of this strategy in action. They achieved a 99.5% delivery rate and a spam rate as low as 0.007%. Even with high-volume campaigns, they maintained a 30% unique open rate by strategically managing their IPs.
"Deliverability is more of an art than a science - the landscape is constantly changing." – Nonso Maduka, Director of Product Management, Glassdoor
Keep in mind that, on average, 1 in 7 marketing emails never reaches the inbox, with deliverability rates hovering around 81%. Using multiple domains and IPs can help you beat those odds by reducing the risk of bottlenecks or failures.
To ensure success, warm up new domains and IPs gradually. Start by sending 10–20 emails per day and slowly increase the volume over 2–4 weeks. This approach builds trust with internet service providers and establishes a positive sender reputation early on.
Finally, monitor the performance of each domain and IP. Track metrics like open rates, click-through rates, and subscriber feedback. If one domain starts underperforming, adjust its strategy or sending volume without disrupting the rest of your infrastructure.
Once your domains are set up, managing them at scale requires automation. Handling multiple domains and IPs manually becomes unmanageable as your outreach grows. Automation tools can take care of routine tasks, allowing you to focus on crafting impactful messages.
Real-time monitoring is critical for maintaining your sender reputation. Use automated tools to track SPF, DKIM, and DMARC authentication. These tools can alert you immediately to any authentication issues.
Automated IP monitoring is another must. It continuously checks your IPs against blacklists, helping you catch and address problems before they impact deliverability. This is especially important since providers like Google and Yahoo block emails from senders with complaint rates of 0.3% or higher.
Engagement tracking automation, meanwhile, monitors interactions like email opens, clicks, and site visits. This data helps you optimize send times and refine your approach for different audience segments.
Re-engagement campaigns can also be automated. These campaigns target inactive subscribers, attempting to win them back. If they remain unresponsive, the system can automatically remove them from your list, protecting your sender reputation.
Infraforge offers a comprehensive solution for managing these processes. Their tools automate DNS setup, provide pre-warmed domains and mailboxes, and offer real-time deliverability monitoring. With features like their API for programmatic scaling and a centralized Masterbox dashboard, managing multiple IPs and domains becomes more efficient.
To maintain a natural sending rhythm, intelligent automation tools can space out emails based on recipient behavior. This prevents your domains from appearing overly aggressive and helps sustain high deliverability rates.
As your email volume grows, so will your infrastructure needs. But with 4.6 billion email users expected by 2025, investing in a robust, automated setup positions you to seize more opportunities while staying compliant with evolving regulations.
Let automation handle the heavy lifting of monitoring and routine tasks, but keep human oversight for strategic decisions. By combining advanced tools with thoughtful management, you can scale your outreach effectively while preserving your sender reputation.
Achieving success with email outreach boils down to how well you execute and how consistent you are. These 12 steps can transform your campaigns from being ignored to landing in inboxes that matter. Considering that email marketing delivers an impressive average return of $36 for every $1 spent, putting in the effort to prepare properly is well worth it.
The process begins with a solid technical setup. Strong email authentication is crucial for ensuring your messages actually reach their destination. With nearly half of all emails - 46% - failing to make it to the intended recipient, authentication becomes your first line of defense.
Personalization is another key driver of engagement, but it’s more than just adding someone’s first name to the email. True personalization involves understanding your recipient’s challenges and crafting messages that genuinely address their needs.
A well-thought-out follow-up strategy can significantly boost response rates. Following up once can increase reply rates by almost 50%, while additional follow-ups help keep the conversation going. Since 70% of emails don’t get a reply on the first attempt, persistence becomes essential to success.
A clear and specific call-to-action (CTA) can make all the difference. Emails with a single, focused CTA see 371% more clicks and drive 1,617% more sales compared to those without one. Keep your CTA simple and tailored to what your recipient needs.
Compliance is non-negotiable if you want to safeguard your sender reputation and ensure long-term success. Clean email lists, proper unsubscribe options, and gradually increasing your send volume are all steps that protect your credibility.
To recap, cold email response rates typically hover between 1% and 10%, depending on the industry. The key to improving these rates lies in constant refinement - A/B testing, monitoring performance, and making strategic tweaks along the way.
Follow this checklist step by step. Start with your technical setup, fine-tune your content, and then scale while keeping an eye on results. With 347 billion emails sent daily to over 4 billion users, standing out takes preparation, persistence, and a commitment to proven techniques.
Success isn’t a matter of chance - it’s the outcome of careful planning and execution. Use this checklist as your guide to better email outreach results.
To keep your email outreach in line with GDPR and CAN-SPAM rules, here’s what you need to do:
Following these guidelines helps you stay on the right side of international email laws while keeping your outreach professional and respectful.
Using a secondary domain for email outreach is a clever way to keep your primary domain's reputation intact. It acts as a shield, preventing your main domain from being flagged or blacklisted due to cold email campaigns. Plus, it can boost email deliverability and makes tracking your campaign performance much simpler.
Here’s how to get started: First, register a new domain. Then, configure your DNS settings with SPF, DKIM, and DMARC to ensure proper authentication. Set up email accounts dedicated solely to outreach, and make sure the domain is fully authenticated. Keep an eye on its performance regularly to maintain a strong sender reputation, and tweak your approach as needed to get the best results.
To get better email deliverability when warming up a new domain, start small. Begin by sending just 5 to 10 emails per day, and then slowly increase the volume over the course of several weeks. This gradual approach helps create a solid reputation with email service providers.
Start by targeting recipients who are likely to engage with your emails - those who are more inclined to open, click, or interact. Their positive actions signal to email providers that your emails are reliable. Don’t forget to authenticate your domain using SPF, DKIM, and DMARC protocols. These are essential for proving your emails are legitimate and ensuring they reach inboxes.
Keep an eye on key metrics like open rates and bounce rates. If you notice any concerning trends, adjust your sending volume accordingly. Consistency is also critical - stick to a regular schedule and avoid using spammy phrases or low-quality content that could trigger spam filters.
By following these practices, you’ll gradually build a strong reputation for your domain, leading to better email deliverability.