SuprSend
Notification workflow API with preferences, batching, and multi-tenant options.
SuprSend is a multi-channel notification platform for email, SMS, WhatsApp, push, Slack, Teams, webhooks, and in-app notifications. It has a broad workflow feature set, including preferences, batching, digests, data modeling, and enterprise multi-tenant controls.
Judged purely as an API. What the request contract guarantees on retry, how complete the webhook event coverage is, whether suppressions are readable and writable programmatically, and how much the message log retains when something needs debugging in production.
Against high-frequency programmatic sends where a missed delivery is a product failure, SuprSend covers webhook coverage, event stream, the suppressions API, batch sending, and SDK breadth, and does not cover idempotency keys. Whether that gap matters depends on how central those are to the build.
- Idempotency keys: No
- Webhooks: Yes
- Event stream: Yes
- Operating since: Not published
- Suppressions API: Yes
- Best published rate per 1,000: Tiers not published in comparable form
- Batch sending: Yes
- SDKs: node, python, go
- Deliverability: Depends on the downstream delivery providers connected for each channel.
Depends on the downstream delivery providers connected for each channel.
Teams that need notification workflows, preferences, and batching without starting at a $249+ paid plan.
Teams that only need a simple in-app inbox.
- › Free plan includes 10,000 notifications
- › Essentials starts lower than Knock, Courier, MagicBell, and Engagespot paid entry plans
- › Strong preference, batching, digest, and data-modeling surface area
- › Enterprise plan lists multi-tenant data modeling and bring-your-own-cloud options
- › Notification counting can still become expensive at multi-channel scale
- › Advanced preferences, objects, and tenant controls sit on higher plans or add-ons
- › Requires downstream providers for email and SMS delivery costs
Features at a glance
| API | Yes |
| SMTP | No |
| SDKs | node, python, go |
| Webhooks | Yes |
| Templates | rich |
| React Email | No |
| Batch send | Yes |
| Scheduled send | Yes |
| Suppressions | Yes |
| Multi-tenant | Yes |
| Inbound parsing | No |
| Event stream | Yes |
| Idempotency keys | No |
| Dedicated IP | No |