Comment to 'Sign up emails not processing'
  • you need set up smtp only, when you use a smtp service, you can check here, if your domain or server ip is blacklisted:

    also you can check on your server, if mail sending is activated

    if you have not many people on your site, i recommend, you should use a smtp service (free plan) to test the mail delivery, if it works, the problem is on your site.

    i use this: it is very simple to set it up in una, with free plan, you get 1000 emails per month, that is enough for testing