mserv-gmail-tool is a personal tool. Its only user is the owner of the Gmail account it connects to.
With the owner's permission, it reads messages and attachments, creates drafts, applies labels and archives messages in the owner's own Gmail account, through Google's Gmail API.
Use of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.
Access can be removed at any time at myaccount.google.com/permissions.