Divide Customer Email List?

[stevesh]

There's nothing built in to Zencart that will do that. You'll have to use one of the external email processors, like MailChimp or (I think) MailBeez.

[fairestcape]

We've installed POMMO on a few clients' servers, and that handles throttling very nicely. MailBeez and Mailchimp are good options - free if you have limited use.