Ability to exclude certain domains or patterns from "Suggested people"

Sell will bring every single new e-mail address under Communication Center -> Suggested people. This is mostly what we want, but there are services that use random e-mail addresses for each message for the Reply-To field, and these need to be continuously cleaned up there too. Examples:

• GitHub sends notifications from notifications@github.com but this is not causing an issue. However, the Reply-To field is always something random (so you can reply in an e-mail), like reply+LONGRANDOMIDENTIFIER@reply.github.com. These all show up in the Communication Center.
• Same thing with Basecamp. These all are sent from but the issue is that the Reply-To field is something like user-name-LONGRANDOMIDENTIFIER@replies.3.basecamp.com.

If we could just tell Sell to always ignore the domains reply.github.com and replies.3.basecamp.com, or perhaps a pattern (like "e-mail ends with @replies.3.basecamp.com") for more flexibility, it would cut down on so much mindless cleanup chore.

Please consider implementing this!