A welcome message goes out to all new members when they join your group.

Along with whatever text you compose, Yahoo! Groups provides a default message to members containing information on how to unsubscribe, change message delivery options, etc.

Here’s how to customize a welcome message for your group:

1. From the list on the left, click Management.
2. Under "Group Settings", click Membership.
3. Click Edit next to "Membership Type and Welcome Message".
4. In the "Welcome" box, compose your message.
5. Click Save Changes.

Bonus: Add another message — or multiple messages, or a photo! — to the welcome for new members by uploading a file to the Files section. Click Files from the list on the left of the page, then just choose "Upon joining group" in the "Auto-send to Members" section. This distributes whatever else you’d like new members to receive when they join the group.