Sending Auto Welcome Emails
3. Editing the Email Text
In order to change the text of the emails sent out to new users go to Site Administration -> Language -> Language customisation. From here select the language you wish to edit from the dropdown, then click the “Open language pack for editing” button.
From here you must select “moodle.php” from the list then in the string identifier field enter “newusernewpassword” and click “Show Strings”.
You will then be presented with the existing standard text for this welcome email. Copy and paste this into the Local customisation box to the right, then tweak as necessary. Clicking either of the save buttons at the bottom of this window will save your changes.