I am in the process of moving my stuff from Google to selfhosted alternatives. Google Photos => Immich, Google Drive => probably Next Cloud or some better alternative.

I am also looking into how to selfhost my email (and yes I know, the horror of inboxing from self hosting. But I am at the point of not only willing to give it a tr, but actively saying "fuck you" to everybody that does not receive my email, because they are on Outlook or O365 (or Google, bt inboxing into Google is easier imho).

Especially with my paid Google now daily having spam in my inbox, while valid emails are so often in spam, that I have to check spam at least once per week.

I've spent the last decade building a Dropbox alternative that works on top of any storage protocol (SFTP, S3, SMB, IFS, GIT WebDAV, local disk, and literally everything else [1]) and its on github [2]

[1] https://www.filestash.app/docs/plugin/#storage

[2] https://github.com/mickael-kerjean/filestash

As someone who self hosts many services, I would encourage you to switch to self hosted email last. Even though self hosting has been made much easier thanks to really incredible FOSS tools, you are going to have random learning pains, some delayed by a few months, and it would really suck to lose email for even the shortest durations. The others are easy to live without while you debug during the learning process.

Btw immich is incredible. I recommend Nextcloud AIO instead of raw Nextcloud. Absolutely great tools

Don't self host email. Checkout purelymail or a similar alternative

Self hosting email is a nightmare and can bite you in the ass big time.