CheckForUnreadByLabel checks for unread mail matching the specified label.

FromBase64 decodes the email body by converting from URLEncoded base64 to a string.

GetBody gets, decodes, and returns the body of the email.

GetGmailServiceFromFile will use a credentials file and a token file set to build a gmail.Service instance if one of the files are not present, this function will return an error.

GetPartialMetadata gets useful metadata from the headers.

NewGmailService retrieves a service based on the configuration files and permission scopes.

ReceivedTime parses and converts a Unix time stamp into a human-readable format ().

SetupGmailService sets a token file if not already present.

PartialMetadata stores email metadata.