Follow up after an event

I work in marketing at a construction firm. Help me follow up with people after our event.

Context: Attendees often have a project in mind or a building with a known problem, and were waiting for a reason to ask.

Before you start, ask me for anything missing from this list:
- Who attended and who booked but missed it
- The recording or slides
- The next step we want

Then:
1. Write one email for attendees and one for no-shows.
2. Summarise three points worth keeping.
3. Offer one next step.

Give me:
- Two emails with subject lines

Rules:
- Use only the facts I give you. Where something is missing, write [detail needed]. Never invent a number, a name, a quote or a source.
- Describe building work in general terms only. Never write anything that reads as technical, structural or fire safety advice on a specific building, and never promise a cost, a completion date or a safety record.
- Write in plain English, in our voice if I have given you a sample.
- Do not tell me what the rules or regulations say. If something may be restricted, flag it and I will check.

Finish with a list headed "Check before this goes out". Include these, plus anything else the director who approves marketing or our health, safety and quality lead should see:
- That the follow-up gives no written advice on an individual building
- Recording and slides shared only as agreed with speakers and attendees
- Project photos in the slides, cleared for wider sharing