Key Takeaways
- A marina waitlist is skippers who opted into that harbor and slip class — not everyone who ever searched “boat.”
- Slip-open SMS is a second list. Do not reuse the “follow this marina” blast.
- Free is 1 device, 300 SMS lifetime, and 300 contacts. Developer is 25,000 SMS per year. Platform price is devices plus send volume.
- Skipper login OTP stays off the harbor SIM.
- Idempotency is slip-id plus skipper-id — harbors reopen the same finger.
Summary
Scenario 911 is marketplace contact lists for marina boat-slip waitlists — not self-storage, not garage stalls, not booking slots, not vehicle PPI. A 40-foot power slip frees. Only skippers who opted into that marina and class should hear “slip open.” Service pricing is devices plus SMS send volume. You bring the phones and operator credit. Free is 1 device, 300 SMS lifetime, and 300 contacts.
Starter allows 2 devices: harbor dual-SIM plus a spare. Uncapped platform volume is not unlimited carrier SMS. Confirm list APIs in Developer Center.
marina · draft · power
slip-id + skipper-id — not “boat”
A slip list is not a harbor dump
Opt-in is marina plus length plus power. “Harbor” is not a list. If a sail-only finger frees, do not page everyone who once wanted a 30-amp power slip.
If you reuse last season’s dinghy list for a new 50-foot slip, you will text people who never followed this marina. Rebuild from live opt-in. Persist slip-id plus skipper-id so a reopen does not double-page.
Marina list matrix
| List | Who | Failure |
|---|---|---|
| Follow marina | Marina opt-in | District-wide dump |
| Slip open | Followers + class | Follow list reused for all lengths |
| Leased | Winner only | All waiters “you got it” |
| Skipper OTP | Auth pool | OTP on the harbor radio |
Slip open and leased
Signed webhooks when a slip frees. Webhooks, DLR. MCP wraps REST only.
Draft / power and STOP
Deep-draft slips stay off trailer lists. Honor STOP. NMMA is industry practice — not a reason to blast the harbor tree.
Devices, volume, and airtime
A sloppy district dump burns volume and trust. We meter devices and platform sends. Free (1/300/300) is one marina proof.
Harbor operations
Charge the harbor chassis before the morning turn. Setup, Downloads, pricing.
Decision guide
Ship when lists are marina-and-class. Delay if you blast “boat.” Not a CodeCanyon marina pack.
Slip checklist
- slip-id + skipper-id idempotency.
- No harbor dump.
- Open list ≠ follow list.
- Leased to winner only.
- Developer Center fields confirmed.
Next steps
Scenario 851 storage, scenario 791 garage.
Related product pages
Jump to the live product docs for this topic—not another long-form article.
- contacts, lists, and segmentsAudience hygiene
- bulk SMS from Excel and CSVSpreadsheet campaigns
- bulk SMS with consent best practicesHigh-volume outreach
- SMS API documentationLive endpoint reference
