Troubleshooting email delivery issues

We've expanded and updated this post into a full guide for troubleshooting email delivery issues. Delivery issues come up for three reasons: Infrastructure, Sending Practices, and Content. When it comes to infrastructure, Postmark takes care of most of the work, but verifying SPF and DKIM is important to improve delivery. Good sending practices are crucial to getting emails to the inbox, including reviewing bounce rates under 5% and spam complaints under 0.10%. Content can also cause issues, with a spam score under 5 being ideal, and avoiding URL shorteners like Bitly that can get blocked by spammers. Testing content is key to resolving delivery issues, and Postmark offers tools to help troubleshoot these problems.

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