I'm calling messages[j].getPlainBody(); to output the body of an email and log it in a spreadsheet. I want to log the plain text of the email - not the signature, footer etc from the email. How can I do this?
I notice in Gmail there's a sort of tab that hides my signature when I'm writing/viewing emails - can I access this programmatically somehow to achieve the above?
The Gmail UI intelligently collapses the messages to hide previous messages or signatures. There is no way to do this in the API. You can log an enhancement request here - https://code.google.com/p/google-apps-script-issues/issues/list