Novu
Open-source notification infrastructure.
Novu is the leading open-source notification platform. Self-host or use the cloud. Workflow editor, multi-channel routing, in-app feed component, BYO providers.
A SaaS product sends on behalf of its customers, so the deciding factors are tenant isolation, whether suppressions can be scoped rather than global, and whether support can answer why one specific account did not receive one specific email. Lifecycle automation and transactional sending usually need to coexist.
Against trial expiry notices, dunning, onboarding sequences, and per-tenant transactional mail, Novu covers multi-tenant support, event stream, the suppressions API, scheduling, and webhook coverage, and does not cover operating track record. Whether that gap matters depends on how central those are to the build.
- Multi-tenant: Yes
- Event stream: Yes
- Suppressions API: Yes
- Operating since: 2021
- Scheduling: Yes
- Best published rate per 1,000: Tiers not published in comparable form
- Deliverability: BYO provider.
- Webhooks: Yes
- Starts at: $250/mo (Business cloud)
BYO provider.
Teams that want self-hostable notification infrastructure.
- › Open source, MIT-licensed
- › Self-hostable
- › Active community
- › Self-hosting takes effort
- › Cloud pricing competitive only above 1M events/mo
Features at a glance
| API | Yes |
| SMTP | No |
| SDKs | node, python, go, php, java, dotnet |
| Webhooks | Yes |
| Templates | rich |
| React Email | Yes |
| Batch send | Yes |
| Scheduled send | Yes |
| Suppressions | Yes |
| Multi-tenant | Yes |
| Inbound parsing | No |
| Event stream | Yes |
| Idempotency keys | Yes |
| Dedicated IP | No |
Appears in rankings
8 Best Self-Hosted Email Tools (2026), Tested
Open-source notification infrastructure with email as one channel.
6 Best Notification Infrastructure Tools (2026), Tested
Open-source champion. Self-host or cloud, with BYO providers for email delivery.
12 Best Open-Source Email Tools (2026), Tested
Notification orchestration across channels.
10 Best Email Tools for Multi-Tenant SaaS (2026), Tested
Open-source and cloud paths for product teams building tenant-aware notification infrastructure.