Follow-up: Proposal Review Reminder

Hi {{first_name}},

Checking in on the proposal I sent on {{date_sent}}.

If useful, I can walk through scope and timeline options live this week.

To make this easy, here are two options:
1) Reply "interested" and I will send a concise next-step plan.
2) Reply "later" and I will follow up at a better time.

To make this easy, I can send a one-page summary covering current status, dependencies, and the most efficient next step.

If you reply "yes", I will send it right away; if timing changed, reply with a better window and I will follow it.