Key Takeaways
- Scenario 810 is offer-deadline SMS: scheduled holds for buyer and listing agent when a contingency clock is running.
- Withdraw or accept in the CRM must delete outstanding holds before a leftover “expires today” fires.
- Do not put the offer price or address in SMS 1. Confirm the party on the inbound thread.
- This is not open-house RSVP or inspection-window logistics. Promo drip stays off this radio.
- 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 810 is a brokerage running offer and contingency clocks — finance clause Friday 17:00, inspection clause Tuesday noon. The Android fires T-24 and T-2 to named parties. The bug is a leftover hold after the offer was withdrawn at lunch.
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Architecture · Developer Center. GSMA.
Offer clock, not a drip
Parties are buyer, buyer agent, listing agent — not the weekend flyer list. Timezone is the contract clause. Quiet hours still apply if you were about to attach a listing promo.
If the offer died at noon and “expires 17:00” still sent, you created a legal-looking ghost and a very real complaint.
Buyer, seller, OTP
| Party | Hold key | SIM | Inbound |
|---|---|---|---|
| Offer parties | offerId + role + kind | Deal phone | NEED CALL / STOP-promo |
| Portal OTP | Auth | Dedicated | Ignore |
| Listing drip | — | Other MSISDN | STOP |
Caps: 2 / 5 / 15.
Friday 17:00 means Friday 17:00
Persist IANA zone on the deal. DST edges after a clock change. Timezones.
Withdraw kills the hold
CRM accept/withdraw/expire deletes holds first. REST: PHP, C#. MCP wraps REST. Two-way.
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.
Contingency week
Canary staff deals. Doze exempt. Setup · STOP.
Price in SMS
Default: no price, no full address. Rotate keys. Not a CodeCanyon deal room.
Lawyer email only
If counsel forbids SMS on live offers, keep clocks in email. Use Android when parties already expect a local MSISDN.
Checklist
- Named parties only.
- Withdraw deletes holds.
- Contract TZ, not laptop TZ.
- No price in SMS 1.
- OTP on another device.
Next steps
Create a fake Friday deadline, withdraw at noon, prove zero 16:00 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
