When not using attachments the submitted mail is delivered both to the sender (via mail2 form) and to the receiver (via mail1 form).
So far everything is working fine!
But when I add a non-required file attachment field to the form and submit I experience some strange behaviors.
1) When adding a file attachment the message is delivered to both parts successfully as before when no attachment field was implemented.
2) But when submitting a form without any file in the attachment input only the sender gets an email delivered, no mail is delivered to the receiver of the form!
Any ideas on what's the problem?