Key Takeaways
- Rails SMS notifications via Android gateway: deliver from ActiveJob with Net::HTTP/Faraday — not a first-party Rails gem SDK product from us.
- Alerts need a charged paired phone and operator airtime.
- Priced by devices and SMS send volume. You use your own phone and operator SMS credit.
- Free 300 SMS lifetime is for canaries.
- Idempotency-Key on each notification.
- Developer Center owns live fields.
Rails notifications over an Android SMS gateway: your mailer/notifier pattern calls HTTPS; the handset sends. Related: Rails order alerts. Ruby webhooks. ActiveJob.
Priced by devices and SMS send volume. You use your own phone and operator SMS credit.
deliver_laterinto a dead Sidekiq queue is quieter than a dead phone — check both before paging humans by SMS.
Rails notifier → HTTPS SMS
POST { to, text } with Bearer from credentials. Fields: Developer Center.
Layer map
| Layer | Rails | Reality |
|---|---|---|
| Notifier / service | Your class | Builds body |
| ActiveJob | Async send | Retries need idempotency |
| HTTP | Faraday/Net::HTTP | 2xx = accept |
| Radio | — | Android + airtime |
Net::HTTP — not an official gem SDK
Do not brand a wrapper as a complete official SMS Gateway gem. Samples elsewhere are recipes.
ActiveJob and idempotency
Same Idempotency-Key on retry. New alert = new key. Webhooks optional — webhooks.
Android for alerts
Keep app awake; isolate from bulk — multi-device.
Related reading
Symfony notifications. Transactional SMS.
Checklist
- Keys in credentials/env.
- Sidekiq/Solid Queue healthy.
- Idempotency-Key set.
- Alert SIM funded.
- No official gem SDK claim.
- Staff canary passed.
Next steps
Page a staff phone once, then size devices + volume.
Related product pages
Jump to the live product docs for this topic—not another long-form article.
- SMS API documentationLive endpoint reference
- device and SMS volume pricingPlans and allowances
- Android SMS gateway product guideDefinition, product, and how to buy
- download the Android gateway appGet the APK
