It's easy enough to selectively save Gmail image attachments to Google Drive, but if you want to automate the process, tech blog Digital Inspiration shares a script that makes the archiving happen ...

Google Voice is a great way to archive voicemail messages, but you must manually download the messages if you want to keep them long-term. Instead, try automatically saving them to your Google Drive.

A custom spreadsheet and script can automatically copy the attachments of messages with a certain tag in Gmail and send them to Google Drive.