I chose ses as the option in the drop in Choose a Driver in the Email tab. And I set the key, secret, and region which I got from Amazon SES. But after I save it, I can't post anything. It gives that red error. I was entering the Amazon SES region as "us-east-1" without the inverted commas. I hope that is right.
Do I have to install the Amazon SDK or something and this Flagrow Mail Drivers extension is incompatible with Beta10 (is it needed?). So I don't know what to do exactly. Any help would be kindly appreciated.
What if I go for Mandrill? Would that be easier?