Feel like I've had "oh here we go, incredible journey that needs me to reconfigure everything" a few times now
e: in fairness to Mailgun the most recent one I was thinking of (Pathwire) was a branding thing not a purchase
Apparently I'm way behind on the Mailgun ownership saga.
What?
Common examples are "forget password" workflows and Spotify/Slack's magic login link workflows.
If you own the transactional mail service through which all these flow, you are now responsible for the security of a large chunk of the Internet.
It's actually really bad that I can sign up with many services using a traditional email and password combo and the "Login with..." options work straight away. They really should be opt-in for security.