Yosemite Cannot locate ~/Library/Mail/Bundles - I can get to Library/Mail but inside Mail there is not Folder called Bundles. I am sure I am missing something simple.

I hope to improve the way Mail works in Yosemite and came upon a tip about Mail plugins, which seem to be in a folder called "~/Library/Mail/Bundles. I cannot locate ~/Library/Mail/Bundles - I can get to Library/Mail but inside Mail there is no Folder called "Bundles". I am sure I am missing something simple. (I visited ~/Library/Mail by pressing alt while in the finder menu Go)

Caryn

OSX Yosemite 10.10.2

Model Name: MacBook Pro, late 2011

Model Identifier: MacBookPro8,2

Processor Name: Intel Core i7

Processor Speed: 2.2 GHz

Memory: 8 GB