Well, now that I've experienced some sort of disk failure on my NAS, I'm sort of annoyed that I did not set up any sort of notification system.

This is just a standard Ubuntu box sitting in the office. It doesn't have any sort of mail or cloud integration setup.

What would you recommend I use for alerting?

Anyway, I suspect a drive controller failure. It connects but the data is garbage. Can't even get SMART out of it.

@janusfox If you're using mdadm to manage your RAID, you can set it up to e-mail alerts to an address, which just uses sendmail; and you can configure sendmail to use an external SMTP server as a relay. I use Zoho to host my mail domains, but I think Gmail also provides a relay service if you use that.
@minneyar Yeah, mdadm. I stopped running SMTP servers on my own, but if Google allows that, I think that will work. I do have Proton mail, though given their recent snafu, I'm not sure I'll complete the migration to that one heh.