You could have downloaded MacUncle Gmail Backup 20.1 for Mac from our application library for free. The actual developer of this Mac application is MacUncle Software. The program lies within System Tools, more precisely Backup & Restore.
From the developer:
MacUncle Gmail Backup can take the backup of the Gmail Inbox, Sent Items, Drafts, Spam, Trash, etc. explicitly. You can download e-mails and other data from Gmail in bulk without any restrictions. You can back up Google Mail in different standard formats such as *.pst, *.msg, *.mbox, *.eml, *.pdf, etc. It maintains the folder structure, e-mail formatting, and Gmail Mailbox integrity.
You may want to check out more Mac applications, such as MacUncle Email Backup, MailVita Gmail Backup for Mac or Mac Gmail Backup, which might be similar to MacUncle Gmail Backup.
Backup & Restore
Backup & Restore