Key Takeaways
- Scenario 450 is a twilight listing shoot: photographer and seller both get the dusk window. A slip cancels both holds — not a lockbox handoff, appraisal, or open house.
- A photographer on a dark lot after a no-show is a wasted golden hour and a cancelled weekend listing.
- Do not SMS the full gate PIN in message 1. Time, street-facing note, and how to reschedule.
- Portal OTP for the listing CMS stays on another device.
- Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Free: 1 device / 300 SMS lifetime / 300 contacts. Developer: 25,000 SMS per year.
Android SMS gateway scenario 450 is a listing desk booking dusk photos. The seller gets “lights on, 18:40.” The photographer gets the same hold. Move-in lockboxes and closing-day wires are the wrong list.
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Scheduled SMS · Developer Center. GSMA.
Dusk hold, not a drip
Schedule T-6h lights reminder + T-0 arrive ping. Cancel both if either party slips. Map to the shoot id, not the MLS id.
If the photographer still arrives after the seller cancelled, you paid for a dark facade and a weekend delay.
Photo vs listing
| Lane | Body | On slip | Device |
|---|---|---|---|
| Dusk window | Time, lights | Cancel both | Listing modem |
| Listing drip | Marketing | Separate | Other SIM |
| CMS portal OTP | Digits | Auth | Dedicated |
Caps: 2 / 5 / 15.
Slip cancels both
One reschedule, next clear dusk. REST: PHP, C#. MCP wraps REST.
No gate PIN first
Street-facing note and time. PIN after inbound HERE.
Devices and airtime
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Free: 300 lifetime. Developer: 25,000 SMS per year. Pricing.
18:40 golden hour
Addresses
Log shoot id + window, not the PIN in chat. Rotate keys. Not a CodeCanyon photo pack.
Schedule or call
If you will not cancel both on slip, do not SMS dusk holds.
Checklist
- Both parties on the hold.
- PIN not in message 1.
- Cancel both on slip.
- OTP on another device.
- Webhook signatures.
Next steps
Slip a staff shoot; prove both pings cancel and the next dusk is a new id. Downloads · Docs.
Related product pages
Jump to the live product docs for this topic—not another long-form article.
- scheduled SMS campaignsSend later windows
- transactional SMS for orders and alertsEvent-driven messages
- SMS auto-reply and STOP keywordsOpt-out and keywords
- SMS API documentationLive endpoint reference
