I have a pretty basic Freeform contact form set up (fields are: first_name, last_name, email, user_message). The form is set so that, when submitted, the admin receives an email to alert him/her to the fact that there is a new message, the user receives an email as confirmation of their submission, and the user is redirected to the thank you page (which recaps their message for them). The redirect and the admin notification are both working perfectly, but for some reason the User Notification is not.
I have a user notification template set up, I have user notification enabled in the CP, and the 'email' field is set as the delivery address. These settings are made in the CP but I also tried adding them into the form explicitly as parameters -- still no luck.
I should add that I do have a sender address correctly set in EE's email preferences (that tripped me up on a previous occasion when I was unable to receive admin notifications -- they were getting stopped as suspicious and spammy because the sender's address was blank). Also, the user emails are not showing up in the spam traps (either at server level or locally)
Anybody have any ideas why admin notification emails would go out/be received whilst user notifications won't? And where can I check, eg. logs, to see if the email is actually being transmitted by EE (in which case it will presumably be a mail server problem)?
Last thing: I'm testing this on MAMP.