After every monthly payment is processed, I wanna use amember autoresponder to send the subscriber an email with the current monthly password. I have 11 months of content in protected folders. And I've written 11 emails, for the 11 months with 11 passwords (1 password per month) I'm using Sendgrid How do I set that up?
Sendgrid is a transactional mail system, they do not do a drip mailing list. You can 'easily' create drip emails in aMember, by product etc ACP > emaill messages > New Autoresponder > simply change the bottom option to xx days after. With that you can say have; First day mail out --- bottom set to the default immediate Second Month 30th Third Month 60th etc for as long as you want Anyway having a password seems bad(ish) they login you have the content available as per the content drip see http://www.amember.com/forum/threads/simple-content-drip.16339/ there is an incremental content video over at membership academy
You can use SendGrid as mail delivery method within aMemeber. Please navigate to aMember Cp -> Configuration -> Setup/Configuration -> E-Mail change 'Email Sending method' to SendGrid and fill in credentials of your SendGriod account. Best Regards.