Why are the emails that I send using Amazon SES getting marked as spam?

Last updated: 2021-06-21

The emails that I send using Amazon Simple Email Service (Amazon SES) are landing in recipient spam folders. Why is this happening? How can I prevent my emails from getting flagged as spam?


A message placed in a spam folder indicates that Amazon SES has successfully delivered the message to the recipient's mail server (ISP). At this stage, Amazon SES has no control over the message and can't guarantee inbox placement.

The ISP decides whether the email is categorized as spam and determines the overall mailbox placement. If the ISP flags the email message as spam, then the email might be placed in the recipient's spam or junk folder.

Several factors can lead to an ISP flagging an email as spam, such as:

To learn more about the best practices for sending emails with Amazon SES, see Tips and best practices.

If you've followed all best practices and your emails still go the spam folder, contact the ISP for more information about the spam classification.

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