Oh I've been waiting for this. https://blog.fastmail.com/2017/06/26/dark-theme/
Good time to recommend FastMail again, I use it for all my mail, personal and business. 50$/year, 2FA and no ads of course, good spam filter, custom domains and aliases (including wildcards), SMTP/IMAP with unique app passwords, good Android app.
It's a serious mail service and much more reliable and time saving than managing your own mail servers.
@CobaltVelvet There are less expensive levels than the $50/year for personal accounts on one of Fastmail's domains. I have been a happy Fastmail user for a few years now.
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