Combine Emails From Column Into Single Cell Separated By Comma, Renamed, Hyperlinked

[kimber7]

I have a worksheet with a column of email address. I would like to combine those email address (excluding the title in first cell) into a different cell on the same sheet and have them separated by a comma. Then, rather than seeing all of the emails, I would like to say a nickname such as "X_Customers". I would like to have hyperlinked so that I just have to click on "X_Customers" and have it open my email and be able to email all of those customers without them being able to see all of the emails I am sending to. I hope that makes sense! Any help would be greatly appreciated!!