Many of us have managed email where changing passwords every few months is required.
We have to go through 50 scripts that use email and change the password on each step.
1) Please provide a common preference tab for the smtp server information.
In the "send mail" option "send via" dropdown add a selection to use the preferred SMTP server settings
2) Also in that same drop down add a send mail from server so that you don't have to gather, save into variables, and pass all the information through to the send mail on server script step.