How to optimize your Gmail storage space

This excerpt provides tips on managing Gmail storage to avoid purchasing a Google One subscription. By default, Google offers 15 GB of storage for emails, Google Docs, Google Drive, and Google Photos. If the box is full, one can delete unnecessary emails, use Google One’s automatic cleanup to remove unwanted files, or manually tidy up Gmail. Large files, spam, and trash content should also be purged. The same strategy applies to Google Drive and Google Photos. Do you have any other tips for effectively managing Gmail storage?
Source