Q: Mail: Which sender occupies most space

How can i figure out which sender has the most emails occupying the most space in my Mail app?

I have added my gmail account to Mail.  I want to erase some emails to free up gmail space because I know I have a lot of small emails from a few senders that occupy so much space just because I have about 1,000 emails from a particular sender with embedded images or something which are 1mb in size maybe, making that sender take up 1,000 x 1 = 1gb.

How can I organize my emails to sort these senders out and eliminate them?

Thanks