Following the instructions here, I transferred most of my email from my old [email protected] account to a custom domain managed by Google.
In my new Gmail account, POP3 is setup to pull from my old Gmail account. In my old Gmail account, forwarding is setup to forward new mail to my new Gmail account.
Do I need both? Is one better than the other?
Also, how do I transfer email in my old Gmail Drafts folder to my new Gmail Drafts folder?
You do not need both. I suggest using mail forwarding because you will receive mail from your old account more quickly than using the POP3 method. Forwarded mail seems to be sent nearly instantly, while POP depends on the new account to poll from the old account. GMail varies the polling frequency based on how often the polled account gets mail. The delay could be as long as an hour. I don't think POP3 will ever be as fast as forwarding.
POP3 forwarding has one advantage: it logs into your old account and keeps it alive. This does not apply for GMail, but some email accounts are closed if inactive. My .edu university account is closed if it is not accessed for a certain period of time. In this case it may make sense to enable both: to get undelayed forwards and keep your account active.
No you don't need both. One is enough, so you can disable the forwarding from the old account.
As for the Drafts there is nothing you can do about them. The easies way is to send them to your new account as a regular mail.
