I run a legit website, A few months ago I could use php mail() function to send veritification emails to prevent spam but now GMAIL is marking my emails as SPAM. What can I do to resolve this issue? Did you blacklist us, if so why? Is it because our server is from Germany? Is there a work around? How can I view their blacklist? Anyhelp be great guys.
Make sure you have your openspf records set... this verifies that the server sending the mail indeed belongs to the domain name... then you should be fine.