Adding in Signatures for Letters and Emails
Go to Tools>System Administration> Group Users.
Click Edit on the user and scroll to the bottom of the page.
Click Upload New File.
Add in text for the Caption.
For The Media Type select Public Image
The Sub Type should be changed to either Signature Images for Letters or Email Signature.
Next click on Choose File and navigate to where the file is stored. (The signature should be in a JPG format)
Then click The Image is now in Alto ready to pull through on any correspondence where the signature merge field is inserted.
Mergefield in Templates:
The merge field is #signature#
Check the letters and and email templates you wish to use, have the correct merge field inserted where required.