Key Takeaways
- Scenario 750 is closing-day logistics SMS: where to sit, when keys move — not viewings, open houses, inspections, or offer clocks.
- A delayed close must cancel the whole hold set before a leftover “see you at 14:00” fires.
- Never schedule wire instructions or lockbox codes in SMS 1.
- Portal OTP and listing promo stay on other MSISDNs.
- 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 750 is a brokerage or escrow desk coordinating closing day. Buyer, seller, and sometimes the attorney get a timed “table at 14:00, bring ID.” The bug is a rain-delay or fund-delay that leaves Thursday’s hold live.
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Architecture · Developer Center. GSMA.
Closing-day clock
Holds: T-24 logistics, T-2 “still 14:00.” Timezone is the closing office, not the listing agent’s laptop.
If funds slipped and “bring the cashier’s check at 14:00” still sent, you created a parking-lot argument and a compliance file.
Buyer, seller, attorney
| Party | Hold key | SIM | Inbound |
|---|---|---|---|
| Closing parties | closeId + role + kind | Closing phone | LATE / NEED CALL |
| Portal OTP | Auth | Dedicated | Ignore |
| Listing drip | — | Other MSISDN | STOP |
Caps: 2 / 5 / 15.
Never SMS wire instructions
Fraud. Portal or attorney after identity. Two-way.
Delay kills the hold set
CRM delay deletes all outstanding holds, then optional new send-at. REST: PHP, C#. MCP wraps REST. Timezones.
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.
Thursday 14:00
Closings cluster mid-week. Canary Tuesday. Doze exempt. Setup · STOP.
Keys and codes
Staff-released lockbox only. Rotate API keys. Not a CodeCanyon escrow kit.
Attorney email only
If counsel forbids SMS on funded files, keep clocks in email. Use Android for time/place when parties expect a local number.
Checklist
- Delay deletes the whole hold set.
- No wire details in SMS.
- Closing office TZ.
- OTP on another device.
- Tuesday canary before closing week.
Next steps
Book a fake Thursday close, slip funds at noon, prove zero 13:00 fire. 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
