OneSignal vs Spotler MailPro: Complete Comparison (2026)
An in-depth comparison of OneSignal and Spotler MailPro to help you choose the right tool for your business.
Last updated: November 2026
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.
Spotler MailPro
6/10
Spotler MailPro is an enterprise email marketing platform for multi-brand organisations and high-volume senders, with relational data, multilingual templates, and SMS and WhatsApp messaging.
Feature-by-Feature Comparison
| Feature | | S Spotler MailPro |
|---|---|---|
| Scores | ||
| Overall Rating | 7.1/10 | 6/10 |
| Analytics | 6/10 | 6/10 |
| Cost | 7/10 | 3/10 |
| Customization | 6/10 | 8/10 |
| Ease of Use | 8/10 | 5/10 |
| Integration | 8/10 | 6/10 |
| Scalability | 8/10 | 8/10 |
| Security | 7/10 | 8/10 |
| Support | 6/10 | 6/10 |
| Pricing | ||
| Free plan | Yes | No |
| Cheapest paid plan | $19/mo Growth | Contact for pricing |
| Estimated cost for 10 users | Free Free | Contact for pricing |
| Features | ||
| Email Marketing | ||
| Segmentation | ||
| SMS Marketing | ||
| A/B Testing | Not listed | |
| Landing Pages | Not listed | |
OneSignal vs Spotler MailPro cost by team size
| Team size | OneSignal | Spotler MailPro |
|---|---|---|
| 1 user | FreeFree | Contact for pricing |
| 5 users | FreeFree | Contact for pricing |
| 10 users | FreeFree | Contact for pricing |
| 25 users | FreeFree | Contact for pricing |
| 50 users | FreeFree | Contact for pricing |
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 OneSignal
- Has a free plan (Spotler MailPro does not)
- Higher Cost score (7/10 vs 3/10)
- Higher Ease of Use score (8/10 vs 5/10)
- Better fit for startups (9/10 vs 2/10)
- Better fit for small business (7/10 vs 2/10)
SWhy choose Spotler MailPro
- Higher Customization score (8/10 vs 6/10)
- Higher Security score (8/10 vs 7/10)
- Better fit for enterprise (9/10 vs 7/10)
Pros & Cons
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.
SSpotler MailPro
Pros
- Content can be managed for several brands and languages from one account, with reusable template blocks
- Relational database model allows segmentation and milestone-triggered emails on linked data
- SMS and WhatsApp are built in alongside email, including bulk sends to MailPro groups
- Spotler cites ISO 27001 and ISO 9001 certification, GDPR compliance and data anonymisation tools
- Ready-made connectors for Salesforce, Dynamics 365, HubSpot, Shopify, Shopware and Adobe Commerce
Cons
- No public pricing; you need a sales quote, and VAT and onboarding are charged on top
- Annual contracts only, and cancellation must be given at least a month before renewal
- A reported entry price of about 549 euros per month rules out small senders
- Few independent user reviews, mostly from the Benelux, make it hard to evaluate in advance
Not sold on either?
Frequently Asked Questions
OneSignal scores higher on our Marketing criteria: 7.1/10 against 6/10 for Spotler MailPro. The largest gap is in Cost: 7/10 for OneSignal and 3/10 for Spotler MailPro.
OneSignal has a free plan; Spotler MailPro does not list one.
OneSignal is the better fit for startups: we rate it 9/10 for them, against 2/10 for Spotler MailPro.
