Discover the Importance of Email Deliverability Audits

Email marketing has long been a powerful tool for businesses to connect with their audience and drive engagement.

However, even with a well-crafted email marketing strategy, your efforts may fall short if your emails don’t reach the intended recipients.

This is where email deliverability audits come into play.

Conducting a comprehensive audit can help you ensure optimal email performance and improve the chances of your messages reaching the inbox.

In this article, we will explore the importance of email deliverability audits and provide a step-by-step guide on conducting one.

Understanding Email Deliverability

Email deliverability refers to the ability of an email to reach the recipient’s inbox successfully.

It involves various factors, including sender reputation, email authentication, content quality, list hygiene, and recipient engagement.

A low email deliverability rate can result in emails being marked as spam or landing in the recipient’s junk folder, significantly diminishing the effectiveness of your email marketing efforts.

Why Email Deliverability Matters

Email deliverability is directly linked to the success of your email marketing campaigns.

When your emails land in the inbox, they have a higher chance of being opened, read, and acted upon by your recipients.

On the other hand, emails that end up in the spam folder or are blocked by ISPs (Internet Service Providers) fail to reach your audience, leading to missed opportunities and wasted resources.

The Role of Email Deliverability Audits

To ensure optimal email deliverability, conducting regular audits is essential.

An email deliverability audit involves a systematic review of various factors that influence the deliverability of your emails.

By identifying and addressing any issues, you can improve your email performance and increase the chances of your messages reaching the inbox.

Step 1: Analyzing Sender Reputation

The first step in an email deliverability audit is to assess your sender reputation.

ISPs and email service providers consider sender reputation when deciding whether to deliver emails to the inbox or treat them as spam.

Factors that affect sender reputation include email volume, complaint rates, bounce rates, and spam trap hits. Monitoring and maintaining a positive sender reputation is crucial for good deliverability.

Step 2: Reviewing Email Authentication

Email authentication verifies the legitimacy of your emails and helps prevent spoofing and phishing attempts.

The primary authentication methods include SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting, and Conformance).

Reviewing and ensuring proper email authentication setup is vital to establish trust with ISPs and improve deliverability.

Step 3: Assessing Email Content

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

Spam filters analyze email content and use various criteria to determine whether an email is legitimate or spam.

It’s crucial to create engaging and relevant content that doesn’t trigger spam filters.

Avoid using excessive capitalization, misleading subject lines, or excessive promotional language.

Make sure your emails provide value to recipients and align with their expectations.

Step 4: Evaluating List Quality

The quality of your email list directly impacts deliverability.

An outdated or poorly maintained list can contain invalid or inactive email addresses, leading to higher bounce rates and spam complaints.

Regularly clean your email list by removing inactive or unengaged subscribers.

Implement double opt-in processes to ensure the accuracy and relevance of your list.

A high-quality list increases the likelihood of your emails reaching the intended recipients.

Step 5: Monitoring Email Deliverability Metrics

To assess the effectiveness of your email deliverability efforts, it’s essential to monitor relevant metrics.

Key metrics to track include delivery rates, open rates, click-through rates, bounce rates, and spam complaint rates.

Analyzing these metrics over time helps identify trends, pinpoint issues, and measure the impact of your deliverability optimization strategies.

Regular monitoring enables you to make data-driven decisions and continually improve your email deliverability.

Common Issues and Solutions

During an email deliverability audit, you may encounter common issues that can hinder your email performance.

Some of these issues include:

  1. Low sender reputation: Improve sender reputation by following best practices, maintaining a clean email list, and promptly addressing spam complaints.
  2. Email authentication failures: Ensure proper setup of SPF, DKIM, and DMARC to authenticate your emails and prevent spoofing.
  3. Content triggering spam filters: Review and optimize your email content to avoid triggering spam filters. Use spam checker tools to identify potential issues.
  4. Poor list quality: Regularly clean and update your email list to remove invalid or unengaged subscribers.
  5. Technical configuration problems: Ensure your email infrastructure is correctly configured, including DNS records, server settings, and feedback loops.

Addressing these issues requires a combination of technical adjustments, content optimization, and diligent list management.

Best Practices for Email Deliverability

To maintain excellent email deliverability, consider the following best practices:

  1. Build a permission-based email list: Obtain consent from recipients before adding them to your email list to ensure engagement and relevance.
  2. Implement a double opt-in process: Send a confirmation email to new subscribers, requiring them to confirm their subscription. This helps validate email addresses and prevent fake or mistyped entries.
  3. Use a reputable email service provider (ESP): Choose an ESP with a good reputation and a track record of high deliverability rates.
  4. Optimize email content: Craft relevant, personalized, and engaging content that adds value to recipients’ lives. Avoid spam trigger words and deceptive subject lines.
  5. Regularly clean and maintain your email list: Remove inactive or unengaged subscribers and address bounced emails promptly.
  6. Monitor deliverability metrics: Track key email deliverability metrics and use the data to identify trends, detect issues, and improve your email performance.
  7. Stay informed about industry changes: Keep up with the latest trends, regulations, and best practices in email marketing to adapt your strategies accordingly.

By following these best practices, you can enhance your email deliverability and maximize the effectiveness of your email marketing campaigns.


Email deliverability audits are vital for ensuring that your emails reach the intended recipients and achieve their intended impact.

By analyzing sender reputation, reviewing email authentication, assessing content quality, evaluating list hygiene, and monitoring deliverability metrics, you can identify and address any issues that may hinder your email performance.

Implementing best practices and staying proactive in maintaining deliverability helps optimize your email marketing efforts and drive better results.


1. How often should I conduct an email deliverability audit?

The frequency of conducting email deliverability audits depends on your email volume, sending practices, and industry standards. It is recommended to perform a comprehensive audit at least once every six months. However, if you notice a decline in deliverability rates, increased spam complaints, or significant changes in your sending practices, it’s advisable to conduct an audit sooner to identify and address any issues promptly.

2. What tools can I use to monitor email deliverability metrics?

Several tools are available to monitor and track email deliverability metrics. Popular options include:

  • Email service provider (ESP) analytics: Most ESPs provide built-in analytics and reporting features that track delivery rates, open rates, click-through rates, bounce rates, and spam complaint rates.
  • Inbox placement testing tools: These tools simulate email delivery and provide insights into inbox placement rates across different ISPs. They help identify potential deliverability issues and provide recommendations for improvement.
  • Reputation monitoring services: These services monitor your sender reputation, IP addresses, and domain reputation, alerting you to any changes or issues that may affect deliverability.
  • Email deliverability consulting services: If you require more comprehensive support, you can engage with deliverability experts who can conduct audits, provide recommendations, and assist with optimizing your email deliverability.

3. How can I improve my email sender reputation?

Improving your email sender reputation requires consistent adherence to best practices and maintaining positive engagement with your recipients. Here are some key strategies:

  • Build and maintain a clean email list by regularly removing inactive or unengaged subscribers.
  • Honor unsubscribe requests promptly to avoid spam complaints.
  • Monitor and address bounced emails to keep your bounce rate low.
  • Implement proper email authentication, including SPF, DKIM, and DMARC.
  • Avoid sending excessive volumes of emails in a short period.
  • Provide valuable and relevant content to your subscribers to encourage engagement.
  • Handle spam complaints seriously by investigating the root causes and taking corrective measures.

By following these practices, you can enhance your sender reputation and increase the likelihood of your emails reaching the inbox.

4. What should I do if my emails are landing in the spam folder?

If your emails consistently land in the spam folder, you should take immediate action to improve deliverability. Start by:

  • Checking your email content for potential spam triggers or deceptive elements.
  • Verifying that your email authentication, including SPF, DKIM, and DMARC, is correctly set up.
  • Assessing your sender reputation and addressing any issues that may negatively impact it.
  • Reviewing your list quality and removing any invalid or unengaged subscribers.
  • Engaging with your recipients and encouraging them to add your email address to their contacts or whitelist.

Implementing these measures, along with continuous monitoring and adjustment, can help improve your email deliverability and ensure that your emails reach the intended recipients’ inbox.

5. How can I optimize email content for better deliverability?

To optimize your email content for better deliverability, consider the following tips:

  • Personalize your emails to make them relevant and engaging.
  • Avoid using excessive capitalization, spam trigger words, or deceptive subject lines.
  • Test your emails using spam checker tools to identify and address potential issues.
  • Use a clear call-to-action (CTA) that entices recipients to take the desired action.
  • Optimize your email design for mobile devices to ensure readability and responsiveness.
  • Provide valuable and informative content that aligns with the expectations of your recipients.

By focusing on these content optimization strategies, you can improve deliverability and increase the chances of your emails reaching the inbox.

Hans Desjarlais
Hans Desjarlais

Hans Desjarlais is a seasoned tech entrepreneur with over a decade of industry experience. Faced with low open rates in his previous lifestyle software business, he dived into the complexities of email deliverability, performed rigorous testing and learned to achieve remarkable results. Now, he specializes in helping companies fix their email deliverability, avoid the spam folder and boost their email ROI.

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