You can now send bulk mail in Fastmail
For smaller newsletters and other bulk emails you can now use Mass Fastmail to separate the 100 recipients into separate emails.
It's a feature I was missing a lot when I moved from Gmail (it has gmass.co) to Fastmail. So eventually I got around to making it happen. Which wasn't an easy feat, only with the help of my 10x smarter colleague we managed to make it work and be stable.
For myself it's a huge productivity boost since I don't have to figure out and configure MailChimp or any other service. Plus, the email lands in the inbox every time.
Roadmap has mail merge (import emails and names/variables from Google Sheets or CSV) and stuff like automatic followup.
Thought you guys might find use for it.
Chrome extension
Firefox Add-On
Feature requests welcome!
The links to the extensions are broken.