Alert21 vs Bird Verify
| Alert21 | Bird Verify | |
|---|---|---|
| Free plan | Yes | |
| Paid from | Free | |
| Platforms | Web | api, Web |
| Pay-as-you-go | Yes | |
| SMS API | Yes | |
| Delivery status | Yes | |
| Webhooks | Yes | |
| Scheduled messages | Yes | |
| 10DLC support | Yes | |
| Free plan | No | |
| TOTP support | No | |
| SMS OTP | Yes | |
| Email OTP | Yes | |
| SDK languages | TypeScript, Python, Go, PHP | |
| Webhook support | Yes | |
| Dedicated IP option | dedicated | |
| Event webhooks | Yes | |
| Inbound calling | Yes | |
| Outbound calling | Yes | |
| Phone number support | Yes | |
| SIP support | Yes | |
| Call recording | Yes |
Listed together in Best Transactional SMS Software