Simplified Manual Chapter 64, #530 again

I posted about this before, but I can't find the post, so I have to ask again.

The sentence:  When you use our lists, you have the assurance that your message is bing delivered to those merchants throughout the country who are ******* (looks like memmer) for your goods--and to nobody else.

Can somebody tell me again what that word is?

(by beantea for everyone)