Find email that has an attachment
This is usually the quickest way to free same space. You can use
has:attachment
to query the mail that contains attachment in the search box. Or if you want, you can even specify the type of file by using filename: .doc
adding "label:" to the query can give more refined search. Too bad we can't sort it by the attachment sizeUsing date
We can also use date to delete our old email. This can be done by using the "before:" and "after:" query. For example :
label:notification before:2011/01/01 after:2010/01/01
Again, using label like the above example, can help to refine your search. And to lessen the impact if you search and then delete the wrong query :)
Starred mail
While using the query above is very useful but often the queries return hundred or even thousand of emails. GMail will page the result, dependent on your settings it can give 25, 50 or even 100 in each page. But still a tedious task to do. GMail can help you even more, by selecting all of the email in that page, another option will come out in the top, that will let you select all of the email in this query. And then delete it.
But this approach is a "scorched earth" approach. You will delete all of the email, but sometimes there are important email included in this search, the one that we usually mark with a star. Logically, we want another parameter in our query. Looking for a starred email can be done by adding
is:starred
parameter to our query. But what we need is a "not starred" parameter. This can be achieved by negating the previous parameter to : -is:starred
. But the problem is, even there's only one email in the thread that isn't starred. The thread would still be selected. Thus why i create my own method to handle this. first i create a temporary label named "my_starred" then i go to each label and query
label:notification before:2011/01/01 after:2010/01/01 is:starred
selecting all, and add my_starred label. And then remove the notification label. After that you an select the notification label again with the date range, and then delete all the email. The last step is to go to the my_starred label, and change it back to the notification label. Repeat this for every other label that you want to clean up.