There are limitations to using GMail for Domains for bulk mailing that I'd like everyone to be aware of:
- There is a 500 outbound message limit. You can only send 500 messages before receiving this warnings:
Net::SMTP::SSL=GLOB(0x8619eec)<<< 550 5.4.5 Daily sending quota exceeded. 36sm2931073nza
- I have found that when sending many messages in a row, GMail can get a little stubborn and randomly refuse to accept my credentials. I will be working on a solution that error checks a little more intelligently in the future.