Restriction: This feature is available only in Enterprise groups.

A custom logo graphic for the group's website must meet these requirements:

• Be in PNG format
• Have a transparent background
• Look good on a dark-colored background
• Have dimensions of 400 pixels wide x 100 pixels high 

Enterprise groups can also change the header and footer graphics that appear in digest and summary emails. Those graphics must meet these requirements:

• Be in JPEG format
• For a header, have dimensions of 800 pixels wide x 93 pixels high
• For a footer, have dimensions of 800 pixels wide x 86 pixels high

To have a custom logo, header, and footer graphic added to your Enterprise group, email the image files to Groups.io Support.