When creating a Mass Email, you will notice that the sender's address will be the one that you previously set up in your User profile.
If you have recently changed your email address and would like to update the sender's email address in the Mass Emailing System it will be necessary to perform that change in the User Administration settings.
Go to Admin --> User Administration:
In the Users List, search for your profile, open the Actions button on the left side, and select Edit:
Enter the new email address in the Email field
Scroll to the bottom and Save Changes
Now when you go to create a new Mass Mail (make sure you are logged in as that user), your new email address will be entered into the "From" field.
If you have any questions about this process please let us know! You can reach us by chat, email at firstname.lastname@example.org, or phone at (800) 700-8112.