I got a lot of emails with uncompressed formats (like bmp, txt, ...) that I want to keep inside my IMAP-inbox, so I can access them from all my devices (Windows, Linux, ios, Android).
Those emails take much disk space and bandwidth on synchronizing.
How could I compress them retrospectively?
One workaround for me is to compress them after I received them:
- Move the email into the drafts folder.
- Edit the email there. (For example, remove the attachment and add a it again after you compressed it, or use the Auto Compress File Addon in Thunderbird)
- Save the draft email
- Move it from your draft-folder back to your inbox. (without sending it)
There are two big drawbacks in this approach:
- The timestamp changes, so the mail seems to be received just now.
- The sender-email changes to your own.
Another, a bit better workaround would be to forward that email to myself and compress the attachment this time.
Then I could delete the attachment from the original mail and will only see it if I look at the whole conversation.
Is there a solution to this?
I don't want to archive the attachments outside of Thunderbird.
I want to keep them inside my IMAP-mail-folder, so I have them on all my email-clients on all my devices.
The best way would be a Thunderbird addon that does the job where I could press "compress Attachment" on every email. (But there only exist addons that compress before sending.)
see also https://bugzilla.mozilla.org/show_bug.cgi?id=852095