On Wed Mar 14 2018 15:17:58 GMT-0400 (Eastern Standard Time), Nick
Rosier <nick+dovecot@bunbun.be> wrote:

I'm currently running a small home-server with Dovecot. A long time ago
I configured it with SIS enabled. I would like to stop using SIS.

If I remove sis from mail_attachment_fs will the old mails that are
stored in SIS-storage still be accessible?
How can I convert all mailboxes to stop using SIS and store attachments
back in the mails?

As one who used Dovecot years ago without SIS (it still wasn't well
baked) but was very interested in it, I'm curious why you want to stop
using it?

I like experimenting with new technology and I liked the idea of SIS. I still think it is but I really don’t need it for the small mail-server I’m running and it adds a lot of complexity to the setup.

There’s also AFAIK no tools to verify integrity or clean-up the SIS. So I’d like to go back to a simple storage solution.