---
title: "A .co Domain, Microsoft 365 Mail, and an Introduction Request Claude Wouldn't Answer"
canonical: https://dxdev.com/everyday-ai/stranger-intro-request-is-spam/
datePublished: 2026-10-02
---
I forwarded Claude a suspicious email with one line: "i fw email to you, i assume spam, can you review." The email was an introduction request.

Claude called it spam, a lead-gen bait email, and said not to reply. It gave three reasons.

## Three things it checked

**The email named nothing specific.** It didn't name the partner, my firm or anything I've done. Claude's point was that the whole purpose is to get me to write back "yes, that's me."

**The .co domain redirected.** The sender's domain was a .co, and the .com version of the same name is a separate site. When Claude visited the .co address, it redirected to a different company name. A real partner firm's site doesn't forward to another brand.

**The mail ran on Microsoft 365.** Claude said plainly that this is normal for lots of companies, but it's also the usual setup for a throwaway cold-outreach domain.

## What a reply would have done

Claude said a reply usually marks your address as live and leads to a "growth partner" or financing pitch. It added that this last part is its read of the pattern, not something it could prove from this one email.

## What got logged

I closed the session, and about 24 minutes were logged for it. The review also produced a finding: inbox-watch ignores forwards from an email address.