Email APIs · side by side
Klaviyo vs Novu
Compare Klaviyo, Novu by sending volume, delivery webhooks, inbound email, domain limits and retention.
Email APIs pricing calculator
These providers bill in different units. Each estimate uses its own workload; there is no same-volume price winner.
Klaviyo
Novu
Klaviyo
Custom / not listed
Custom / unlisted usage pricing · 10K profiles
Novu
$0 / mo
Free · 0 workflow runs
Listed USD plan fees and tracked usage only. Unlisted compute, transfer, extras, taxes and contract terms are excluded. Custom or unsupported plan usage is not estimated.
Email APIs overview & pricing
| Email APIs | Klaviyo | Novu |
|---|---|---|
| Provider | Klaviyo | Novu |
| Billing unit | profiles | workflow runs |
| Plan at selected usage | Custom / unlisted usage pricing | Free |
| Monthly estimate | Custom / not listed | $0/mo |
| Workload | 10K profiles | 0 workflow runs |
| Free access | Limited free plan | Free tier includes 10,000 workflow runs per month across all channels, up to 20 workflows, 2 environments, and up to 3 t |
| Published plans | Free | Free, Pro, Team, Enterprise, Enterprise On-Prem Self-Hosted |
| Prices checked | 2026-10-08 | 2026-10-08 |
- Klaviyo
- Klaviyo
- Novu
- Novu
- Klaviyo
- profiles
- Novu
- workflow runs
- Klaviyo
- Custom / unlisted usage pricing
- Novu
- Free
- Klaviyo
- Custom / not listed
- Novu
- $0/mo
- Klaviyo
- 10K profiles
- Novu
- 0 workflow runs
- Klaviyo
- Limited free plan
- Novu
- Free tier includes 10,000 workflow runs per month across all channels, up to 20 workflows, 2 environments, and up to 3 t
- Klaviyo
- Free
- Novu
- Free, Pro, Team, Enterprise, Enterprise On-Prem Self-Hosted
- Klaviyo
- 2026-10-08
- Novu
- 2026-10-08
Email APIs monthly cost
Different workloads, separate estimates
Separate transactional delivery from campaigns, outreach and agent inboxes. Compare monthly sends and daily caps; contacts, seats and inboxes are not sending allowances. Budget separately for dedicated IPs, validation and attachments.
Which email providers fit your needs?
Klaviyo features & plan notes
- E-commerce data
- Omnichannel
- Shopify ecosystem
Novu features & plan notes
- Unified multi-channel orchestration across email, in-app inbox, SMS, push, and chat
- Pre-built embeddable Inbox component and subscriber preference management
- Workflow engine supporting digests, delays, conditional logic, and provider integrations
- Open-source core with options for cloud hosting or self-hosted deployment
- 10,000 workflow runs / month
- All channels: Email, In-app, SMS, Chat, Push
- US + EU data residency
- Up to 20 workflows
- 2 environments (Dev + Prod)
- Activity feed retention: 24 hours
- Up to 3 team members
How to compare email providers
Separate transactional delivery from campaigns, outreach and agent inboxes. Compare monthly sends and daily caps; contacts, seats and inboxes are not sending allowances. Budget separately for dedicated IPs, validation and attachments.
Browse Email APIs pricing