You can't just send 100k emails with a good delivery rate, if you're a nobody Gmail will never trust you. You can follow all the rules the want ( dkim, spf etc

You can't just send 100k emails with a good delivery rate, if you're a nobody Gmail will never trust you. You can follow all the rules the want ( dkim, spf etc .. ) somehow it will no be delivered because you don't know exaclty how they rate your IP.