Amazon WorkMail Shutting Down in 2027: A Step-by-Step Gmail Migration Guide

Amazon has announced it will end support for WorkMail on March 31, 2027, prompting users to seek alternative email solutions. A former AWS subject matter expert for WorkMail and SES has published a detailed intermediate-level guide on migrating mailboxes to Google Workspace. The migration uses WorkMail's built-in StartMailboxExportJob API to export emails as KMS-encrypted ZIP files containing standard .eml and .ics formats to an S3 bucket. A custom Python script then uploads the exported messages directly into Gmail via IMAP, eliminating the need for any third-party migration tools. Users are advised to separately export contacts and tasks from the WorkMail web app, as these are not included in the standard export, and to configure SPF, DKIM, and DMARC records for their domain after switching.
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