IMAP folder retention policy should have option to move messages to a folder on Local Folders.

[RavenWing71]

One of the things we battle as an email provider, as well as a user, is people collecting messages in their IMAP folders and running out of space.  Prime example is the Sent folder, but other folders too.  I wish there was a way to tell Thunderbird to move emails older than a certain age to a designated folder on the Local Folders.  The logic used in the Folder Retention settings is perfect, we just need to be able to change the action from Delete, to Move to [Folder] on Local Folders.  This way I can have access to the recent Sent messages on my phone, and all my Sent messages in Thunderbird on my main computer.

[Jon]

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