Key Takeaways
- PowerShell bulk send against an Android SMS gateway is Invoke-RestMethod (or curl.exe) over HTTPS JSON — not a Microsoft-branded SMS SDK we ship.
- Confirm live paths in Developer Center. Persist ids; accept ≠ delivered.
- Pace the loop. One SIM is bounded by OEM ceilings and carrier fair-use.
- Keep API keys in a secured automation host or secret store — never in a shared .ps1 on a desktop.
- Isolate OTP from promotional CSV loops.
- You bring the phone and operator airtime. We meter devices and send volume.
Invoke-RestMethod is not an ESP
PowerShell Android SMS gateway API bulk send loop: read a CSV or queue, POST JSON per row, store ids, honor STOP, and pace so the handset stays healthy. Hub: Android SMS gateway API. Bulk product lane: bulk SMS. Live fields: Developer Center.
If the script finishes in twelve seconds and the phone is still warm, you did not send a campaign — you hammered a radio.
REST only — no PowerShell SDK product
Use Invoke-RestMethod with Bearer auth from a secret store. Do not invent a PowerShellGet module as our product. Same physics as Node/PHP loops — different shell. External: Invoke-RestMethod docs.
Loop vs radio
| Step | Script | Radio reality |
|---|---|---|
| POST message | Auth, timeout, catch non-2xx | Job may queue if phone busy |
| Persist id | Write before next row | Needed for DLR join |
| Sleep / batch | Throttle between posts | OEM + carrier ceilings still apply |
| STOP / suppress | Skip suppressed MSISDNs | Inbound STOP is your table |
Pace the loop
Prefer multi-device plans when volume needs parallel radios — multi-device and dual SIM. Keep OTP off the promo deviceIds. CSV hygiene: bulk from Excel/CSV.
Cost
Devices plus SMS send volume. Operator airtime is yours. Every accepted send counts toward platform volume; failed retries still burn SIM credit. Free: 1 device / 300 SMS lifetime. Starter, Professional, and Business list Unlimited SMS as platform send volume; that is not unmetered carrier SMS.
Checklist
- Secret store for Bearer token; no keys in git.
- Idempotency / client ref for resuming a crashed loop.
- Throttle + device health alert before big CSV.
- DLR or webhook consumer ready.
- OTP pool excluded; consent/STOP joined.
Next steps
devices and SMS volume, setup, PowerShell send SMS.
Related product pages
Jump to the live product docs for this topic—not another long-form article.
- bulk SMS from Excel and CSVSpreadsheet campaigns
- bulk SMS with consent best practicesHigh-volume outreach
- SMS API documentationLive endpoint reference
- device and SMS volume pricingPlans and allowances
