[saana]

I remember MailChimp/Mandrill removed their free tier, making me move to Sendgrid.

Only because of that I hope they go under sooner than later.

[blacksmith_tb]

Ouch, that forced transition was certainly developer-hostile, but I don't want to see Mailchimp go bankrupt just because they pulled the plug on me (and switching to Sendgrid was basically an improvement for me, anyhow).