Mailrise vs Sensu Go
A side-by-side comparison of two self-hosted monitoring & status options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Mailrise | Sensu Go |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 48 · Fair | 82 · Excellent |
| Category | Monitoring & Status | Monitoring & Status |
| License | MIT | MIT |
| Language | Python | Go |
| Setup difficulty | Easy | Medium |
| Min. RAM | 64 MB | 512 MB |
| Deployment | docker | docker, kubernetes, binary |
| GitHub stars | ★ 1,592 | ★ 1,112 |
| First released | 2021 | 2018 |
| Replaces | PagerDuty | Datadog, PagerDuty |
What are Mailrise and Sensu Go?
Mailrise
Mailrise acts as an SMTP server that receives email alerts from legacy systems and forwards them as push notifications through Apprise. It bridges old monitoring tools to modern notification channels.
- SMTP-to-push bridge
- Apprise integration
- Many notification targets
- Tiny footprint
Sensu Go
Sensu Go is a monitoring event pipeline that treats monitoring as code. It collects check results from agents, processes them through filters and handlers, and integrates with metrics and alerting backends.
- Monitoring as code workflow
- Event filtering and handlers
- Agent and agentless checks
- Built-in metrics support
Mailrise vs Sensu Go: key differences
Mailrise is written in Python, while Sensu Go is built with Go. Mailrise is the lighter option, starting around 64 MB of RAM against 512 MB for Sensu Go. Sensu Go is the more established project (first released 2018), while Mailrise arrived in 2021.
Why pick each one
Choose Mailrise if…
- Released under the MIT license
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- Active community (1.6k GitHub stars)
Choose Sensu Go if…
- Declarative configuration
- Flexible event pipeline
Watch out for
- Smaller community after acquisition
- Concepts take time to learn
Frequently asked questions
Is Mailrise or Sensu Go better?
Mailrise is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Sensu Go if its specific feature set fits your needs better.
Are Mailrise and Sensu Go free and open-source?
Yes. Mailrise is licensed under MIT and Sensu Go under MIT. Both can be self-hosted at no software cost.
Can I run Mailrise and Sensu Go with Docker?
Mailrise: yes. Sensu Go: yes.
Which is lighter on resources, Mailrise or Sensu Go?
Mailrise has the smaller minimum footprint at 64 MB of RAM, compared to about 512 MB for Sensu Go. Real-world usage depends on library size, user count, and enabled features.