Engineering / ENG-1368
Spike: SMS provider for phone-code sign-in
Description
Northgate and Greenhollow have depot workers with no company email. A code by SMS is the obvious way in. Which provider?
Compared two (Textbridge and one other) on the same 200 test messages to IE, UK, NL and DE numbers:
| Textbridge | Other | |
|---|---|---|
| Delivered within 20 s | 97% | 94% |
| Sender name "ACME" allowed | IE, UK, NL, DE | UK, NL only |
| Delivery receipts | webhook | polling only |
| Price per SMS (EU average) | €0.045 | €0.052 |
| Where messages are processed | UK and EU data centres; an EU-only contract (EU numbers kept in the EU) "planned" | EU |
Recommendation: Textbridge. The processing location goes on the sub-processor list; if a customer needs EU-only SMS we revisit when Textbridge's EU contract exists.
Linked issues
- relates to ENG-1418 Phone codes for depot workers without email Done
Fine by me. I'll write it up as an ADR once product starts the work. Their receipts webhook needs a public endpoint on notifier; we have one for Mailcrest bounces already (ENG-1387).