Charnita, owner of Social Web Tools, has been a full-time Freelance Writer & Professional Blogger since 2008. As an early adopter she loves trying out new social media tools and services. As the owner of a Windows PC, Macbook Pro, and iPad, she also loves trying out apps of all kinds and browser extensions. You can connect with her on Facebook, Twitter, Google+, and LinkedIn.
In your Gmail, all you have to do is to enter the term size:10mb in the search box and all emails larger than 10MB will show up in the list. You can change the number to reflect the size you want to filter.
This is so far the easiest way to filter your emails by size.