5 Steps to Improve your Email Deliverability

Email marketing remains one of the most cost-effective and high-ROI channels for businesses of all sizes. 

However, poor email deliverability can significantly undermine the success of even the most well-crafted campaigns. According to data from Validity, the average inbox placement rate across industries is 83%, meaning nearly one-fifth of emails never reach their intended recipients.

Achieving consistent inbox placement is a multi-faceted challenge that requires a strategic approach.

From building a clean and engaged email list to implementing proper authentication protocols, optimizing content and design, and maintaining a positive sender reputation, there are numerous factors that contribute to successful email deliverability.

This comprehensive guide will walk you through steps and best practices to tackle email deliverability head-on.

Build and Maintain a Clean Email List

An email list filled with engaged subscribers is the foundation of successful email marketing campaigns. 

To build and maintain a clean email list, follow these best practices:

1/ Set up Double Opt-in: Implement a double opt-in process, where subscribers confirm their email addresses after initially signing up. 

This ensures that you only have permission-based subscribers on your list, improving deliverability and reducing the risk of being marked as spam.

2/ Optimize Signup Forms: Ensure your signup forms are clear and compelling. Offer incentives like discounts or free resources to encourage signups. 

Use progressive profiling to gather relevant subscriber information over time, enabling better segmentation and personalization.

3/ Offer Lead Magnets: Create valuable resources like guides, checklists, or templates, and offer them as lead magnets. 

4/ Practice List Hygiene: Regularly remove inactive subscribers who haven’t engaged with your emails for an extended period (e.g., 6-12 months). 

Consider using email verification services like BriteVerify or NeverBounce to identify and remove invalid or outdated email addresses. 

Set up re-engagement campaigns to win back inactive subscribers before removing them from your list.

5/ Segment Your List: Segment your list based on subscriber interests, behavior, location, or other relevant criteria. This allows you to send more targeted and relevant emails, improving engagement and deliverability.

6/ Personalize Your Emails: Utilize dynamic content blocks and personalized subject lines to create a more tailored experience for your subscribers. 

Personalization can significantly improve open and click-through rates.

Implement Email Authentication Protocols

Email authentication protocols are essential for establishing trust with internet service providers (ISPs) and improving your email deliverability rates. 

By implementing these protocols correctly, you’re essentially verifying your identity as a legitimate sender, which helps your emails bypass spam filters and land in your subscribers’ inboxes.

Set up SPF (Sender Policy Framework)

SPF is an email authentication standard that allows you to specify which mail servers are authorized to send emails on behalf of your domain. 

To set up SPF, you’ll need to create a TXT record in your Domain Name System (DNS) that lists the IP addresses or hostnames of your authorized email service provider (ESP) or mail servers.

Configure DKIM (DomainKeys Identified Mail)

DKIM is another email authentication protocol that ensures the integrity of your email messages. 

It works by adding a digital signature to your outgoing emails, verifying that the content hasn’t been tampered with during transit. 

To set up DKIM, you’ll need to generate a public-private key pair and publish the public key as a TXT record in your DNS.

Implement DMARC (Domain-based Message Authentication, Reporting & Conformance) 

DMARC builds upon SPF and DKIM, providing an additional layer of protection against email spoofing and phishing attacks. It allows you to specify how ISPs should handle emails that fail SPF or DKIM authentication checks. 

Setting up DMARC involves creating a TXT record in your DNS that outlines your policy preferences.

Other Things to Keep in Mind

If you’re sending emails from multiple subdomains or plan to switch domains in the future, ensure that your email authentication protocols are properly configured for all relevant domains and subdomains. 

This seamless setup will help maintain your sender reputation and prevent deliverability issues.

When introducing new IP addresses for email sending, it’s essential to warm them up gradually. 

Start by sending a low volume of emails and gradually increase the volume over time. This process helps establish a positive sending reputation with ISPs, improving your deliverability rates.

Optimize Email Content and Design

Crafting engaging and relevant email content, combined with a well-designed email layout, can significantly improve your email deliverability and overall campaign performance. 

Follow these best practices to optimize your email content and design:

1/ Craft Compelling Subject Lines: Your subject line is the first thing your subscribers see, and it can make or break your email’s open rates. 

Keep subject lines concise (around 50 characters or less), compelling, and relevant to the email’s content. Personalize subject lines by including the recipient’s name or other relevant details.

2/ Write Attention-Grabbing Preheader Text: The preheader text, which appears next to or below the subject line in many email clients, is often overlooked but can significantly impact open rates. 

Use this space to provide a clear and enticing preview of your email’s content.

3/ Create Valuable and Engaging Content: Your email content should provide value to your subscribers, whether it’s informative, educational, or entertaining. Use a conversational tone, and break up text with visuals, headings, and bullet points for easier readability.

4/ Optimize for Mobile Devices: With the majority of emails now being read on mobile devices, it’s crucial to ensure your emails are mobile-responsive. 

Use responsive email design techniques, such as fluid layouts and scalable images, to provide an optimal viewing experience across devices.

5/ Prioritize Accessibility: Make your emails accessible to all subscribers, including those with disabilities. 

Use appropriate alt text for images, maintain adequate color contrast, and ensure font sizes are legible.

5/ Leverage A/B Testing: Continuously test and optimize your email elements, such as subject lines, content layout, call-to-action placement, and design elements. 

A/B testing can help you identify the most effective combinations and make data-driven improvements.

6/ Segment and Personalize: Segmenting your email list and personalizing content based on subscriber interests, behavior, or location can significantly improve engagement and deliverability rates. 

Use dynamic content blocks to display tailored content for different segments.

Monitor and Troubleshoot Deliverability Issues

Maintaining a keen eye on your email deliverability metrics is crucial, but it’s equally important to have a proactive approach to troubleshooting any issues that may arise. 

Here’s how you can stay ahead of the game:

Leverage ESP Tools and Resources

Start by taking advantage of the powerful tools and resources provided by your email service provider (ESP). 

Many ESPs offer built-in monitoring and troubleshooting solutions like SendForensics or 250ok, which can provide valuable insights into your deliverability performance. 

Utilize these tools to identify potential issues and receive actionable recommendations for improvement.

Set Up Monitoring and Alerts

Implementing monitoring systems and setting up alerts is a proactive measure that can save you time and effort. 

Seed lists and spam traps are essential tools in this regard. 

Seed lists are test email accounts used to monitor inbox placement, while spam traps are email addresses used by ISPs and anti-spam organizations to identify potential spam or unauthorized email practices. 

By monitoring these, you can quickly identify and address any red flags.

Analyze Bounce Data

Bounce logs provide valuable insights into email delivery issues. 

Regularly review these logs to categorize different types of bounces, such as hard bounces (invalid email addresses) and soft bounces (temporary delivery issues). 

Take appropriate actions based on bounce types, such as removing hard bounces from your list and adjusting sending patterns for soft bounces.

Stay Ahead of Blacklists

Regularly check reputable blacklist monitoring services to ensure your IP addresses or domains aren’t listed on any major blacklists. 

If you find yourself on a blacklist, follow the recommended steps to get delisted as quickly as possible.

Adjust Sending Patterns

If you notice a spike in bounces, complaints, or other deliverability issues, consider temporarily reducing your sending volume or adjusting your sending rates. 

This can help alleviate stress on ISP systems and improve your sender reputation.

Continuous Optimization

Regularly review your key deliverability metrics, such as bounce rates, inbox placement rates, spam complaints, and engagement rates. 

Use this data to identify trends, uncover potential issues, and make informed decisions about optimizing your email campaigns for better performance.

Maintain Email Sender Reputation

Your email sender reputation is a crucial factor that directly impacts your deliverability rates. 

Internet Service Providers (ISPs) and anti-spam organizations closely monitor sender reputations to determine if emails should be delivered to the inbox or marked as spam. 

Maintaining a positive sender reputation is an ongoing process that requires consistent effort.

Start with a Proper IP Warm-Up

When introducing a new IP address for email sending, it’s essential to warm it up gradually. 

Start by sending a low volume of emails and slowly increase the volume over time. 

This gradual approach helps establish a positive sending reputation with ISPs, demonstrating that you’re a legitimate sender.

Manage Engagement and Inactivity

Consistently monitoring and managing your subscriber engagement levels is crucial. 

Engaged subscribers who open and interact with your emails positively impact your sender reputation. 

Conversely, high inactivity rates can harm your reputation. Implement re-engagement campaigns to win back inactive subscribers, and remove chronic non-openers after several attempts.

Practice Content Hygiene

The content of your emails plays a significant role in determining your sender reputation. 

Avoid using spammy language, excessive punctuation, or misleading subject lines.

Additionally, ensure your email content aligns with your industry and the expectations of your subscribers.

Handle Feedback Loops and Complaints

Feedback loops are mechanisms provided by ISPs to notify senders of spam complaints from their users. 

Promptly handle these complaints by investigating the root cause and taking appropriate action, such as removing the complainant from your list or adjusting your content strategy.

Bottomline

From building a clean and engaged email list to optimizing content and design, monitoring performance, and maintaining a positive sender reputation, these best practices will help you achieve consistent inbox placement and maximize the impact of your email marketing campaigns.

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Author Bio: 

Suraj writes about technology and software solutions, and he loves coding too. Over 1.60 million people have read his work online, showing he knows how to make complex ideas easy to understand.