I never thought this phone would give me a headache, that one is already turned on, on the primary server. But for some reason, you can't click the information below, say I wanted to edit something
Below Primary Server, you'll see Other SMTP Servers. Tap "Add Server". On the next page, enter "smtp.gmail.com" to "Host Name" and let Google verify this server. You don't need to enter a password or your username.