Mailchimp vs OneSignal: Complete Comparison (2026)
An in-depth comparison of Mailchimp and OneSignal to help you choose the right tool for your business.
Last updated: November 2026
Mailchimp
6.6/10
Intuit-owned email marketing platform with automation flows, signup forms, segmentation and optional SMS, priced by contact count for small and growing businesses.
OneSignal
7.1/10
OneSignal is a customer messaging platform for sending mobile push, web push, in-app messages, email and SMS to app and website users.
Feature-by-Feature Comparison
| Feature | | |
|---|---|---|
| Scores | ||
| Overall Rating | 6.6/10 | 7.1/10 |
| Scalability | 7/10 | 8/10 |
| Ease of Use | 8/10 | 8/10 |
| Customization | 7/10 | 6/10 |
| Security | 6/10 | 7/10 |
| Support | 5/10 | 6/10 |
| Cost | 4/10 | 7/10 |
| Integration | 8/10 | 8/10 |
| Analytics | 7/10 | 6/10 |
| Pricing | ||
| Free plan | Yes | Yes |
| Cheapest paid plan | $13/mo Essentials | $19/mo Growth |
| Estimated cost for 10 users | $350/mo Premium | Free Free |
| Features | ||
| A/B Testing | ||
| Email Marketing | ||
| Segmentation | ||
| SMS Marketing | ||
| E-commerce Features | Not listed | |
| Landing Pages | Not listed | |
Mailchimp vs OneSignal cost by team size
Mailchimp and OneSignal cost the same at 1 user; OneSignal costs less from 5 users.
| Team size | Mailchimp | OneSignal |
|---|---|---|
| 1 user | FreeFree | FreeFree |
| 5 users | $20/moStandard | FreeFree |
| 10 users | $350/moPremium | FreeFree |
| 25 users | $350/moPremium | FreeFree |
| 50 users | $350/moPremium | FreeFree |
The plan that fits each team size, billed monthly, before add-ons and usage charges. Each cost opens that tool's pricing calculator for the team size.
Which One Should You Choose?
Why choose Mailchimp
- Higher Customization score (7/10 vs 6/10)
- Higher Analytics score (7/10 vs 6/10)
- Better fit for e-commerce (7/10 vs 5/10)
Why choose OneSignal
- Lower estimated cost for 10 users: Free vs $350/mo
- Higher Cost score (7/10 vs 4/10)
- Higher Scalability score (8/10 vs 7/10)
- Better fit for developers (7/10 vs 2/10)
- Better fit for enterprise (7/10 vs 4/10)
Pros & Cons
Mailchimp
Pros
- Reviewers on G2 and Capterra often praise the template library and easy navigation, which help non-technical users send campaigns quickly.
- Large review base, with a 4.5 rating on Capterra from more than 17,000 reviews and 4.3 on G2.
- Standard includes up to 200 automation flows, predictive segments and generative AI tools at a low starting price.
- Premium adds enterprise SSO, unlimited seats and dedicated onboarding for larger teams.
Cons
- Costs rise steeply with list size. Premium starts at 350 USD a month, and reviewers rank pricing as the top complaint.
- New accounts are billed for unsubscribed and unconfirmed contacts, and going over the plan limit triggers overage fees.
- In January 2026 the Free plan was cut to 250 contacts and 500 sends a month, and automations were removed from it.
- Reviewers on G2 and Capterra say support is slow or inconsistent, especially for integration troubleshooting.
- Essentials limits automation flows to four steps.
OneSignal
Pros
- A free plan with unlimited push up to 1,000 MAU and 10,000 emails a month makes it cheap to start.
- Push, in-app, email and SMS run from one platform with cross-channel journeys.
- Reviewers on G2 and PeerSpot say the dashboard is easy for non-technical marketers to use.
- A broad integration catalog covers CDPs such as Segment, RudderStack and Hightouch, data warehouses, and analytics tools.
Cons
- PeerSpot reviewers call it expensive for large subscriber bases.
- Free and Growth plans cap segments at 6 and 10, and reporting history at 30 and 90 days.
- SMS pricing is not published and requires a sales conversation.
- Reviewers mention unclear documentation for advanced cases and limited in-app design options.
Not sold on either?
Frequently Asked Questions
OneSignal scores higher on our Marketing criteria: 7.1/10 against 6.6/10 for Mailchimp. The largest gap is in Cost: 4/10 for Mailchimp and 7/10 for OneSignal.
OneSignal costs less for 10 users: free on its Free plan, against about $350/mo on its Premium plan for Mailchimp, billed monthly.
Yes, both Mailchimp and OneSignal have a free plan.
OneSignal is the better fit for developers: we rate it 7/10 for them, against 2/10 for Mailchimp.
