I love the ability to organize and keep my email designs in separate projects (as I create a lot of different campaigns and BEE helps me keep it clean).
BEE Pro is simple to use, allows us to build beautiful and responsive emails and the ability to get my teams feedback quickly and easily has been such an amazing experience.
The building blocks system is intuitive and easy to use and I'm thrilled that there is a click-of-a-button easy integration for our mailing solution.
This is especially frustrating when I'm trying to send an urgent bulk-email to our list.
I found BeePro after using Stripo and MailStyler2, and being frustrated with MailChimp, Constant Contact and Hubspots internal tools.
Its lack of indicator whether a (new) feature, such as show/hide on desktop/mobile, would work on a specific email app/client.