Migrated from Mailchimp to Sendgrid for marketing emails.

It was a big step to migrate from Mailchimp to Sendgrid for marketing emails. I was skeptic about the user experience and ease of use while comparing both options. However, I made the move as mailchimp price was imcreasing with number of subscribers.

Sendpulse, Sendinblue were other considerations - haven't explored everything at this moment, but could be helpful for others if you are considering a move.