Not a phone book
Link the company you pay.
Mail between those two addresses can be checked. Recipients see Listed, Not listed, or Listing doesn’t match this address. DNS keys if they published TXT. Hosted listings on the company desk after they enroll, not a public directory. Not a phone book of every company. If you are using Signet7, the other company gets the free check and an invite — they do not install Signet7 desktop unless they want to. If they also run Signet7, listing and the stamp happen when you send. Invite once per recipient. Mail comes from Signet7, not inside the business letter.
