Zimbra combines email, calendar and address book tools in an integrated system. For the Web Client, this is all found at one address and under one login.
Log in to Zimbra webmail to compose a new mail.
Zimbra web mail user interface.
Click on the drop down list.
Follow the steps and click Save to save the signature. To create another signature click New Signature before click to Save.
Now put your old password and new password to change your password.