I have a wordpress installation on a School Website that uses both Gravity Forms and Contact Form 7 plugins to send forms. The Gravity Forms seem to work OK, however the Contact Form 7 ones fail when the Sendgrid plugin is activated. I have used Mandrill before with no issues and wondered if anyone else had come across an issue with SendGrid & CF7 or if you could shed some light on it.
The error is Failed to send message. The messages arrive in Flamingo OK but do not send. Any ideas