ime: it stays very fast, even with 1.5k emails in inbox, ~30k emails / 2.5G total in various folders.

Also, changes propagate faster even than gmail. If you have your inbox open on 2 computers and move an email out of your inbox on one of them, you'll see it replicated in near real time on the second computer. I don't know how they do it, but it works really well.

You can know how we do it if you like:

https://blog.fastmail.com/2014/12/02/dec-3-push-it-real-good...

and how we do the initial load as well:

https://blog.fastmail.com/2014/12/15/dec-15-putting-the-fast...

Thanks, that was fascinating. And props to the salt-n-pepa fan!

Interesting, thanks for that. I'm up and running on my own domain after waiting for the domain name server to transfer from Bluehost where I registered the domain. I did start out doing manual configuration until deciding I might as well use Fastmail's; their DNS config page is rather nicely laid out.

Was very easy in the end, but must admit I had forgotten just about everything I once learned about DNS. As such it was nice to get a little refresher.

EDIT: I would probably have gone for Google Apps / G Suite if not for this article. So, yeah, hope it served Google well to freeze those accounts with no warning.