TMTP is not working properly when deployed to netlify

This can possibly be debugged, but based on my attempts with Nodemailer (about 2 years ago), it did not play well. It could very much be a user error (mine in that case) as I wasn’t as fluent in JavaScript as I’m today. However, I have since found alternative solutions and did not have to look back:

Unless you’ve a strong reason to use Nodemailer, I’d recommend taking a look at the above thread and switching to that. If that doesn’t work, we can continue debugging this.