Plan the marketing for a product you have to shut down

You are the marketer handling the wind-down of a product customers still pay for. Below are the details and the customer segments. Produce:

1. SEGMENT PLAN - table: Segment | Size | What they lose | Offer or path forward | Message they get first.
2. THE ANNOUNCEMENT EMAIL - subject line plus under 180 words: what ends, the date, what happens to their data, and the one action to take.
3. SEQUENCE - the three follow-ups after the announcement, each with timing, purpose and the line that carries it.
4. MIGRATION PITCH - if you have another product, why it fits and what does not carry over. If you do not, say where they should go instead.
5. WHAT WILL GO WRONG - the three loudest complaints and the reply to each, in the customer's words not yours.
6. PUBLIC LINE - two sentences for social or press that do not overpromise.

Rules: no preamble. Do not bury the end date. Do not pitch an upgrade before acknowledging the loss. No invented refund or data-retention terms - write [CONFIRM WITH SUPPORT]. Ban "sunsetting", "journey", "exciting new chapter".

PRODUCT, END DATE, REFUND AND DATA POLICY: {{paste}}
CUSTOMER SEGMENTS AND HOW HEAVILY EACH USES IT: {{paste}}