The current implementation will specify the entry by the user (their email address) in the from address field and reply-to header. This implementation is fine in most instances.
Recently, I have started using AWS Workmail and unless I have a mailbox set up for the user in the from address field and the reply-to header AWS SMTP server will not set the email.
Email mailbox/user in AWS Workmail costs about $4.00 per month if it was possible to set up these accounts. As it stands it is not possible to make API calls to set these users up because they are from different domains.
Please add a feature to allow the admin to set the from & reply-to email address and the option to override the user email address in the contact form.
I should add that I have modified to contact.php to do this already by changing the lines to the following: