Managing Customer email Lists for bulk eMailings

[Spartan33]

I am restricted by my server to 500 max emails for bulk mailings. Is there a way to add a category of the customer email list so that <500 emails are sent. IE drop down that would allow all customer last name (emails) from A - F, G - L, or another solution?

[lruskauff]

I was told it was better to use an email program like Constant contact to send emails.