Hi iojis.w
I have the same issue! I’m the web master for a non-profit organisation in San Diego called Paws’itive Teams (https://www.pawsteams.org/). They are a service/therapy dog program and they have 10 forms in their site to gather information from users. And, of course, the plugin is Contact Form7.
I contacted my host/server (liquid web) to find out if there are any errors in mail server logs, but he found nothing! I read FAQ page on developer’s plugin (Takayuki Miyoshi) web site and found this thread that has the same issue I SEE A RESPONSE MESSAGE “YOUR MESSAGE WAS SENT SUCCESSFULLY” WITH GREEN BORDER, BUT I NEVER RECEIVE A MAIL FOR THAT.
It’s very strange?! Certain email accounts do go through; for example, people who have email accounts like Gmail, Hotmail, or macmail go through! But, others like yahoo (like me), AOL and others don’t go through, not even into junk/spam folders. The liquid web tech person mentioned that probably yahoo and others NULL it. But, I’m not sure!
I have installed a new forms plugin (Easy Contact Forms by Champion Forms https://easy-contact-forms.com ) to test it out if does the same, but it does not! I do receive the info using my yahoo account. So, I’m not sure what’s going on!!! Is it that Contact Form7 has a flaw somewhere in the scripting??!! Or, is it that certain email services are NULLing it! I like Contact Form7 WP plugin ALOT! And, I would like to continue using it, so hopefully this will get resolved. I’m willing to give more detail about this issue.
Kind Regards,
David Guzman