Novu vs Fly.io
Open-source notification infrastructure — workflows across email, SMS, push, chat, in-app
vs. Run your app close to users, globally
Pricing tiers
Novu
Free
10K workflow runs/mo. All channels. 20 workflows, 2 environments, 3 team members, 24h retention.
Free
Self-hosted (OSS)
Open source (MIT). Run locally or on own infrastructure. No usage limits.
$0 base (usage-based)
Pro
From $30/mo. 30K+ runs, 7-day retention, branding removal, advanced email editor.
$30/mo
Team
From $250/mo. 250K+ runs, 10 envs, 90-day retention, RBAC, 600 RPS.
$250/mo
Enterprise
Custom. 10M+ runs, HIPAA BAA, SSO/OIDC, data residency (SG/UK/AU/JP/KR), self-hosted/VPC.
Custom
Fly.io
Pay-as-you-go
No monthly fee. Machines billed per second. Free allocations: ~3 small shared machines + 3 GB volumes.
$0 base (usage-based)
Shared CPU 1x — 256 MB
Entry VM. 1 shared vCPU, 256 MB RAM. ~$2.02/month continuously on.
$2/mo
Performance 1x — 2 GB
Dedicated 1 vCPU, 2 GB RAM.
$32/mo
Reservation — Shared (1 yr)
$36/year for $5/mo credit (40% savings).
$36/mo
Shared CPU 8x — 16 GB
8 shared vCPU, 16 GB RAM.
$89/mo
Performance 16x — 128 GB
Dedicated 16 vCPU, 128 GB RAM.
$1014/mo
Enterprise
Custom. Dedicated capacity, SLA.
Custom
Free-tier quotas head-to-head
Comparing free on Novu vs pay-as-you-go on Fly.io.
| Metric | Novu | Fly.io |
|---|---|---|
| retention | 1 days | — |
| workflow runs monthly | 10000 runs/mo | — |
| workflows | 20 workflows | — |
Features
Novu · 15 features
- Activity Feed — Message-by-message delivery timeline.
- Chat — Slack, Microsoft Teams, Discord, Mattermost, WhatsApp, WeChat.
- Email — SendGrid, Postmark, Mailgun, AWS SES, Resend, SMTP, Plunk, Mailjet, Sparkpost, M…
- Inbox — React/Next/Vue/Angular in-app Inbox component.
- Layouts — Reusable email layouts with template nesting.
- Multi-tenancy — Per-tenant branding, templates, preferences.
- Novu Framework — Code-first workflow DSL (TypeScript) colocated with app code.
- Preferences — Per-subscriber + global notification preferences.
- Push — APNs, FCM, Expo, OneSignal, Pushpad, Pusher.
- Self-hosting — Docker Compose / Kubernetes deployment of full stack.
- SMS — Twilio, MessageBird, Plivo, Nexmo, Termii, Sendchamp, Africa's Talking, Kannel, …
- Subscribers — Subscriber profiles with channels, preferences, topics.
- Topics — Pub/sub style subscribe many users to a topic.
- Translations — i18n support for templates.
- Workflows — Code-first or visual notification workflows with steps, branches, delays.
Fly.io · 14 features
- Auto Stop/Start — Machines auto-stop when idle, start on request (like scale-to-zero).
- Certs — Let's Encrypt + wildcard certs managed.
- Fly GPU — A100/L40S/A10 on-demand GPU machines.
- Fly Kubernetes (FKS) — Managed Kubernetes on Fly machines.
- Fly Machines — Firecracker microVMs. Start in <1s. Run any Docker image.
- Fly Postgres — Managed Postgres via Supabase partnership (2024). Also legacy self-run Postgres …
- fly-replay headers — Route request to another region at app level.
- Fly Volumes — Persistent SSD attached to a Machine. Encrypted at rest.
- Global Anycast — Single IP routes to the closest region automatically.
- LiteFS — Distributed SQLite with primary/replica across regions.
- Private Networks — 6PN WireGuard mesh. Connect machines across regions privately.
- Secrets — Encrypted env vars propagated to all regions.
- Tigris (partner) — S3-compatible storage for Fly apps. By partner.
- Upstash Redis (partner) — Managed Redis via Upstash.
Developer interfaces
| Kind | Novu | Fly.io |
|---|---|---|
| CLI | Novu CLI | flyctl CLI |
| SDK | go-novu, @novu/api, @novu/framework, novu-java, novu-kotlin, novu-php, novu (Python), @novu/react (Inbox), novu-ruby | — |
| REST | Novu REST API | Machines API |
| GRAPHQL | — | Fly GraphQL API |
| OTHER | Outbound Webhooks, Self-hosted (Docker) | Fly Postgres (wire) |
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