I’ve been able to get it to work with unencrypted (but authenticated) SMTP out port 25, which will do, at least for now.
Thanks again for all your help, and thanks for releasing GuiForm under GPL.
I get the add mail dialog, but when I added a mail item (Send emails via SMTP; Use SSL encryption (Recommended); Use SMTP authentication) and clicked “Save Mail”, I got a green-topped box that said “Success/Add mail successful” that didn’t have a way to close itself. When I clicked outside that box, the Mail Setup screen went back to having “No item available”.
Thanks