How do I change the message inside a Confirmation Email?
A Confirmation Message is sent to a potential subscriber when allowing them to join automatically (without list moderator's intervention).
Log into your mail-list account and click on "Update Your Account Settings".
Log into your Mail-List.com account from http://db.mail-list.com and click on "Customize Your List":
Change the default Subject Line if you wish:
Click on "mark field for update":
Next, click on "Confirmation Message" below "Subject Line on Confirmation Message" and make changes:
When a confirmation message is sent out to a subscriber, "subscraddr" is automatically replaced with the subscriber's email address. You can place it anywhere in the message.
Save your changes.
See this lesson for more details: