email-infra-provisioninglisted

# Provisioning, DNS & Authentication · [Sales Ops] > **Reads:** `{SKILL_BASE}/resources/reference.md` §1, §4, §6 · `{SKILL_BASE}/resources/approved-vendors.md` · **Related:** domain-research, warmup-golive, instantly-setup. Turn purchased domains (the domain-research sub-skill) into sending-ready mailboxes with correct authentication. This is where two of our biggest historical mistakes live, **bare redirects** and **default tracking domains**, so read the "never" boxes. Numbers in `{SKILL_BASE}/resources/reference.md` §6; vendors in `{SKILL_BASE}/resources/approved-vendors.md`. --- ## Part 1, Mailboxes - **Mailboxes per domain (average): Google 2–3, Microsoft up to ~25.** Google stays lean for deliverability; Microsoft can host many per domain. Verify the per-provider density on scale-ups. - **One domain = one workspace.** - **Real first-name addresses:** `alex@`, `sarah@`, `james@`, keep names consistent across domains. **Never** `sales@`, `info@`, `noreply@`, `hello@`, `outreach@`. - **Profile picture** (professional headshot) on every mailbox, improves deliverability and reply rate; don't skip. - **Provider split: ask, don't assume.** There is no house mix — it's a per-client decision, and it moves the mailbox count more than the monthly goal does (`reference.md` §4). Get it in writing before you size the build. **Google Workspace (Business Starter):** add the secondary domain → verify via TXT → create the 2 users → configure DNS (Part 3). **Microsoft 365 (Business