ImapSync VS Mail-in-a-Box

There are two solutions for this 1. Using a tool called imap-sync to sync all your emails (it has a great incremental sync). You can run it periodically via cron 2. Using the same or similar tool and export to a database.

I'll assume you want to use another domain in the new Workspace account you will create for her. If that's true, just use imapsync to migrate her emails from the current account to the new one. This tool will migrate all emails, labels and attachments. You only need to enable 2FA and create an App Password for both the source and destination account and have IMAP enabled. If you want something simpler, try DMS https://support.google.com/a/answer/9476255?hl=en#zippy=%2Cstep-migrate-email-from-imap-based-webmail-providers

Use ImapSync to migrate between accounts https://imapsync.lamiral.info/

When I did my last migration I used https://imapsync.lamiral.info/

I would consider using Mail Server (not plus) instead. Set up an account for each of the users, then use IMAPSYNC (https://imapsync.lamiral.info/) to backup mail from the original server to the Synology.

I don't discouraging to write your own app to do that, but there is imapsync that can sync two IMAP servers (one|two ways), so basically if you would setup simple local IMAP server, you can sync mail one way to local IMAP using imapsync and connect to it anytime you want using any email client with convenience of any email client that will sort, search...

If this isn't performante enough you have to setup some things. IMAP Server And Imapsync https://github.com/imapsync/imapsync

Use imapsync https://github.com/imapsync/imapsync/blob/master/FAQ.d/FAQ.XOAUTH2.txt

I've been using https://mailinabox.email on a small VPS where I host a few other websites and projects. I'd recommend it for the management aspect: It has backup scripts and a UI for let's encrypt and dns entries.

may i recommend https://mailinabox.email ?

If you have a better solution, for example a good provider who offer agency packages which allows many domains and there is no catch, for example very small disk space, then hit me right away. Otherwise, please share your experience with hosting your own mail service. I found https://mailinabox.email/ and https://www.iredmail.org/ for example, but never had any experience with neither of them.

mailinabox.email works great on a basic vps.

I have used mailinabox for many years on a digitalocean droplet. I've recently added-on a small-time SMTP relay provider who is using mxroute as their upstream service.

Something like https://mailinabox.email/ or some other dockerized mail service solution might be an option to consider.

The closest direct competitor to mailcow would be mailinabox. But I am not sure what the memory profile of that is going to be.