gmail - How to delete emails with larger file attachments -

my gmail account getting filled large emails.

how can delete larger file sized emails gmail account.

or other work around save space in gmail id. api call or program ?

very simple

search

larger:20m  

20m file size

and if need time search use

older_by:300d     larger:20m  older_by:300d 

will give files older 300 days , larger file attachment of 20m