Updated “Migrate IMAP” on beta server

We’ve made some updates to the Options –> Migrate IMAP feature that are currently on the beta server. Certain edge cases that were causing problems have been fixed up, and there’s now a “No duplicates” option as well. When enabled, as each folder is migrated, the migration code will first check if the folder exists locally, and if so, retrieve a list of Message-Id headers. It will then not download any remote message with the same Message-Id. This can be useful for avoiding large numbers of duplicate emails being downloaded if for some reason a migrate only partially completes, or for some reason you already have some messages downloaded from a remote server.

Please email me (robm@fastmail.fm) with feedback if you’re able to test this feature. Assuming there’s no issues, this will be rolled out to production soon.

Posted in Technical. Comments Off on Updated “Migrate IMAP” on beta server

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