Self-Hosted Main

I use fetchmail to grab mail from an email provider and deliver it to my dovecot instance hosted at home. My mail provider is just used to store mail temporarly (up to a minute unless my server is down) and send email (I use their SMTP server).

That way, my data is stored at home but I don't have usual 'selfhosted mail server' issues. I can be down for days and my email will be received by my provider and I don't need to do/setup/maintain anything to ensure my mail will be deliverable!

With a custom domain and nothing that stay on their server, I can switch provider within a few minutes by updating the nameserver to point my domain to another server

To manage large email accounts on Xplornet without the need for additional server space for old emails (20GB+), you can set up a self-hosted IMAP archiving solution, like Dovecot, on your own server. This allows you to archive older emails locally while still using Xplornet's webmail system for sending and receiving messages. If multiple users need access, you can deploy a webmail solution like Roundcube or Rainloop. This setup enables you and your family to access archived emails and compose new ones using their SMTP credentials, similar to how Gmail or Outlook handle POP3 accounts. This way, you can maintain email accounts on Xplornet while archiving emails efficiently.