Great piece of software!

1. We have multiple AWS accounts and was wondering if there was a way to tell the program which one to use based on the FROM addresses or simply just which account to send it through.

2. Also is there a way to set throttle so it sticks to thresholds given by AWS?

3. Is increase capacity equal to simply upgrading the server to higher specs or do we need to make any code changes to handle higher concurrent loads?