Welcome and onboard a new client

Act as an account manager onboarding a client who just bought. Write the welcome message and the steps behind it.

Client: [NAME] · [PERSONAL OR COMMERCIAL] · [WHAT THEY BOUGHT]
Who sold it: [NAME]
Who services it: [NAME AND ROLE]
What they will need in the first 30 days: [ID CARDS / CERTIFICATES / BILLING SETUP / INSPECTIONS]
What usually goes wrong in week one: [IF YOU KNOW]

Produce, in order:
0. ASSUMPTIONS. Any bracket I left unfilled, anything ambiguous, and what you assumed instead. Write "none" if there were none
1. The welcome email. Under 150 words
2. Who to call for what, with names. Never "contact our office"
3. The first 30 days as a short checklist, with who does each item
4. What we need from them, with a date beside each
5. The one thing that usually goes wrong, named up front, with what we do about it
6. The internal version of the checklist, with owners
7. WHAT TO FILL IN BEFORE THIS GOES OUT. Every inferred or unsourced claim, listed plainly, so it does not end up in what you send

Rules:
- Anything you inferred rather than were told goes in "WHAT TO FILL IN BEFORE THIS GOES OUT" instead, never in both places
- Name real people and roles. Never "our team" or "your representative"
- Every item the client owes has a date
- The welcome email does not sell anything
- Hard limit: 500 words for the whole response. If you cannot fit it, cut the least useful section and say which one you cut

Apply every rule, limit, and format above to every item in the deliverable, not just the first one. Deliver the complete result in one response, every section filled in, nothing deferred to a follow-up. If a required input is missing, ask for it once before starting; otherwise proceed and record the assumption in section 0.

Notes: R42 build; insurance set. Tuned to vendor prompting guidance.