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Tools
Email & lifecycle analytics
10 tools compared: how each is priced, where it runs, and what to consider instead.
| Tool | Pricing model | Free tier | Open source |
|---|---|---|---|
| Braze Enterprise customer engagement platform priced by monthly active users, with Canvas holdout groups for measuring campaign lift. | Quote only | No | No |
| Customer.io Data-driven messaging platform priced by tracked profiles, with A/B and multivariate testing to measure campaign performance. | Usage-based | No | No |
| Email on Acid Pre-send email preview and QA tool priced by monthly preview volume, not a campaign analytics platform. | Subscription | No | No |
| Iterable Cross-channel marketing platform with an Experiments feature for holdout-based lift testing, priced by quote only. | Quote only | No | No |
| Klaviyo Ecommerce-focused marketing platform pricing by contact count, with cohort revenue and deliverability reporting built in. | Usage-based | Yes | No |
| Litmus Email rendering and pre-send QA tool that previews and checks campaigns across clients, not a lifecycle analytics platform. | Quote only | No | No |
| Mailchimp Small-business marketing platform with basic subject-line A/B testing, priced by contact count with a permanent free tier. | Free tier + paid | Yes | No |
| MoEngage Cross-channel customer engagement platform for mobile and web, with A/B testing but no published pricing or confirmed holdout-group feature. | Quote only | No | No |
| OneSignal Push, email, SMS and in-app messaging platform priced by monthly active users, with a permanent free tier for small volumes. | Usage-based | Yes | No |
| Twilio SendGrid Transactional and marketing email API priced by monthly send volume, with deliverability analytics but no journey-level holdout testing. | Usage-based | No | No |