Adding Logos in Zimbra
In Zimbra, there are two different images to re-brand: one is the image that appears in the Login window and the other is the image in the top-left corner when you are logged in. Each image has a different size, and the logos for the open source email platform (FOSS) should be set to the following max sizes:
Application Banner, 200px X 35px in Zimbra Collaboration 8.x;
Application Banner, 170px X 42px in Zimbra Collaboration 8.0.x;
Login Banner, 440px X 60px in Zimbra Collaboration 8.x;
Login Banner, 450px X 36px in Zimbra Collaboration 8.0.x;
