Referring to this thread I'm able to retrieve my signature from Gmail with the code var signature = Gmail.Users.Settings.SendAs.list("me").sendAs.filter(function(account){if(account.isDefault){return true}})[0].signature;
But if I attach the retrieved HTML to the email body, the recipient see the raw code instead of my signature. I red many threads with this problem, but I'm unable to understand how fix this, I'm not expert with HTML. Please could someone help me?