If you’re unable to click the Send button when composing an email in Event Temple, it’s usually because required fields are missing.
To successfully send an email:
You must have a valid email address in the To field. This means selecting a Contact that has an email address.
You also need to add a Subject line. If the subject is missing, the Send button will remain inactive.
Once both fields are filled in, you’ll be able to send the email as expected.