You're an developer evangelist for Sendgrid. I can't believe you have not been fired for tweeting those pictures and getting those developers fired without even talking to them.

Since Sendgrid continues to employee you, I'd encourage any developers using Sendgrid to switch to an alternative like Postmark or Mailgun. Let Sendgrid know why you are switching.

For the record, I agree with you that those jokes were inappropriate, but what you did was orders of magnitude more inappropriate and unprofessional.