Key Takeaways
- Scenario 42 is dry-riser test T-8 07:00 SMS — not fire-door T-5, lift T-2, smoke-alarm T-3, occupancy-cert T-15, key-fob T-11, parking-permit T-9, open-house, or auction T-30.
- A 07:00 that fires in HQ timezone while the block is still asleep is a complaint, not a safety notice.
- Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Free is 300 SMS lifetime, 1 device. Developer is 25,000 SMS per year.
- Starter is 2 devices; the block spare still counts.
- Hold open-house CSV until riser DLR drains.
- Canary the block SIM at 06:40, not at last night’s nurture job.
Summary
Scenario 42 is a dry-riser test notice at 07:00 local, eight days out: DLR retried, open-house CSV held until receipts drain. Service pricing is based on device count and total SMS sent through the gateway. You need a working Android phone with a SIM and SMS credit from your mobile operator. Operator message costs are yours—we do not sell carrier SMS balance.
If the contractor is in the riser cupboard and residents never got the 07:00, you scheduled a file. You did not warn the block.
Not a CodeCanyon “property SMS” pack. Device meters apply — Twilio vs Android SMS gateway.
Key takeaways
- Scenario 42 is dry-riser test T-8 07:00 SMS — not fire-door T-5, lift T-2, smoke-alarm T-3, occupancy-cert T-15, key-fob T-11, parking-permit T-9, open-house, or auction T-30.
- A 07:00 that fires in HQ timezone while the block is still asleep is a complaint, not a safety notice.
- Priced by devices and SMS send volume. You use your own phone and operator SMS credit. Free is 300 SMS lifetime, 1 device. Developer is 25,000 SMS per year.
- Starter is 2 devices; the block spare still counts.
- Hold open-house CSV until riser DLR drains.
- Canary the block SIM at 06:40, not at last night’s nurture job.
Related reading
scheduled SMS campaigns, transactional SMS, how an Android SMS gateway works, UK fire safety in blocks of flats.
Context
Test starts 07:15 local. Residents need a delivered ping at 07:00. Lettings still wants an open-house CSV.
Free (300 SMS lifetime) is a rehearsal block. Developer is 25,000 SMS per year.
Core scenario guidance
07:00 is dry-riser T-8, not fire-door T-5 or lift T-2. Timezone is the listing, not agency HQ.
Dry-riser T-8 roles
| Role | When | Typical fail |
|---|---|---|
| T-8 07:00 notice | Listing local, eight days out | Phone asleep in a locked plant room |
| Failed DLR retry | Own template, 20 min later | Merged into the open-house body |
| Staff OTP | Transactional, own pool | Dumped onto the block radio |
| Open-house / nurture | Held until last riser DLR | Released at 06:50 into safety SMS |
Cost and ownership
Priced by devices and SMS send volume. You use your own phone and operator SMS credit. The block spare is a billed device. Duplicate notices burn airtime.
Name a 06:30–09:00 on-call for riser mornings, not only weekday lettings.
Operations
06:40 canary. Abort: hold open-house, keep staff OTP, skip a second “all residents” blast. Do not “resend the block.”
Security and compliance
Short safety texts. No unit numbers plus names in one SMS. Authenticate PMS hooks. Open-house lists are promotional.
Decision guide
Ship when 06:40 canary is green and DLR retries stay on the block radio. Delay if phones sleep in the plant room. If handsets are forbidden, CPaaS for staff OTP.
Checklist
- Block SIM paired overnight.
- 06:40 canary.
- Spare live before 07:00.
- Staff OTP isolated.
- Open-house held.
- Airtime before 06:30.
- Battery exemptions.
- Listing locale.
- Riser-morning on-call named.
- Device cap includes spare.
Next steps
Review device and SMS volume pricing, device setup, SMS API documentation.
Deep dive: production hardening
Estates killing USB overnight is an outage at 07:00. Watch DLR, not PMS 200s. Schedules must survive device sleep.
Deep dive: scaling and failure modes
Multi-block T-8 mornings add devices before inventing a hidden unlimited-handset SKU. Raise OEM ceilings; fair-use remains.
Deep dive: integration discipline
Idempotency on block_id + date + kind (notice|retry). MCP is a REST wrapper — live fields in Developer Center.
Priced by devices and SMS send volume. You use your own phone and operator SMS credit.
06:40 riser drill
Canary. Fire one T-8 notice. Confirm DLR before open-house CSV. Hold nurture during the wave.
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
