
Discover essential tools and techniques to test and improve your email deliverability, ensuring your messages reach your subscribers' inboxes and maximize the impact of your campaigns.
Business in a box.
Discover our solutions.
Talk to our sales team
In the world of email marketing, ensuring your messages reach their intended recipients is paramount.
Email deliverability testing is the key to unlocking this potential. This guide will walk you through the essential tools and techniques for testing and monitoring your email deliverability, helping you maximize the impact of your campaigns.
What is email deliverability testing?
Email deliverability testing is the process of evaluating how well your emails make it to subscribers' inboxes. It involves analyzing various factors that affect delivery, such as sender reputation, email content, and technical setup. By conducting these tests, you can identify and address issues that might be preventing your messages from reaching their destination.
Why regular testing is crucial
Consistent email deliverability testing is not just a best practice—it's a necessity for maintaining a healthy email program. Here's why:
ISP algorithms are constantly evolving, and what worked yesterday might not work today.
Your sender reputation can fluctuate based on recipient engagement and complaint rates.
Technical issues can arise unexpectedly, impacting your ability to deliver emails successfully.
Regular testing helps you stay ahead of potential problems and maintain high deliverability rates.
By implementing a robust testing strategy, you're not just reacting to issues—you're proactively ensuring the success of your email campaigns.
Types of email deliverability tests
To comprehensively assess your email deliverability, you should employ various testing methods. Each type of test provides unique insights into different aspects of your email program.
Inbox placement testing
Inbox placement testing determines whether your emails are landing in the inbox, spam folder, or getting blocked entirely. This test is crucial because even if your emails are delivered, they're far less likely to be seen or acted upon if they end up in the spam folder.
Bird's inbox placement testing tool provides detailed reports on where your emails are landing across multiple ISPs and email clients. This information allows you to pinpoint specific issues and take targeted action to improve your inbox placement rates.
Spam filter testing
Spam filter testing evaluates how likely your emails are to be flagged as spam by various filters. This test analyzes your email content, subject lines, and sender information against common spam triggers.
By using Bird's spam testing features, you can identify elements in your emails that might be triggering spam filters. This allows you to refine your content and improve your chances of reaching the inbox.
Email rendering testing
Email rendering testing shows you how your emails appear across different email clients and devices. With the variety of email clients and screen sizes available today, it's crucial to ensure your emails look great everywhere.
Bird's email rendering tool provides screenshots of your emails across multiple email clients and devices. This helps you identify and fix any rendering issues before sending your campaign to your entire list.
Seed list testing
Seed list testing involves sending your email to a predetermined list of email addresses (seeds) across various ISPs and email clients. This method provides insights into delivery rates, spam folder placement, and potential blocking issues.
Bird's seed list testing feature allows you to create and manage seed lists, providing you with real-time data on your email deliverability across different ISPs.
Popular email deliverability testing tools
While we've mentioned Bird's comprehensive suite of testing tools, there are other options available that offer certain parts of the tool set:
Bird: Bird is the market leader when it comes to email sending and deliverability. Bird sends almost 40% of all B2C email globally and has more data and better reporting than any tool in the market.
Litmus: Known for its email rendering tests and workflow tools.
Email on Acid: Provides pre-deployment testing and email analytics.
GlockApps: Offers real-time deliverability testing and monitoring.
Interpreting and acting on test results
Once you've conducted your tests, it's crucial to understand and act on the results. Here's a brief guide:
Inbox Placement: If you're seeing low inbox placement rates, focus on improving your sender reputation. This might involve cleaning your email list, improving engagement rates, or adjusting your sending frequency.
Spam Filter Tests: If your emails are triggering spam filters, review and adjust your content. Avoid spam trigger words, balance your text-to-image ratio, and ensure your authentication protocols (SPF, DKIM, DMARC) are correctly set up.
Rendering Tests: If your emails aren't rendering correctly across all clients, adjust your HTML and CSS. Consider using a responsive email template to ensure your emails look great on all devices.
Seed List Results: If certain ISPs are blocking your emails, you may need to reach out to them directly to resolve any issues. Bird's deliverability services can assist with this process.