This simple Gmail trick got me another 15GB of storage for free (without losing anything)
Briefly

If your inbox is overflowing with unread newsletters and spammy emails that made it past your filter, you can take action to preserve all your important missives while starting afresh with a new inbox.
As an added safety measure, it's a good practice to back up your emails on your computer or an external hard drive before transferring them back into the cloud.
To do this, go to Google Takeout and select 'Google Photos' and/or 'Drive' as the products you wish to export, then follow the prompts.
Be aware that this process can take a while, depending on your quantity of emails and number of gigabytes. This can help in managing storage effectively.
Read at ZDNET
[
|
]