Hello,
I had tested by disabling all plugins (really all!) and putting back the original theme. Without success.
On the other hand, I installed the “Brevo” plugin so that the messages go through a transactional smtp. And this technique worked. And I have the impression that this solution worked for quite a few people. I can’t really explain why or how. But it solved the problem!
Hello @takayukister,
Thank you for your feedback. All forms on the site are affected. Both the contact form in the footer, the quote request (green button at the top right), and even a test form that I set up on a non-visible page.
