Mailgun vs Omnisend: Complete Comparison (2026)
An in-depth comparison of Mailgun and Omnisend to help you choose the right tool for your business.
Last updated: November 2026
Mailgun
6.8/10
Mailgun is a developer-focused email API and SMTP relay service that apps and businesses use to send, receive, track and validate transactional and bulk email.
Omnisend
6.8/10
Email, SMS and web push marketing platform for online stores, with prebuilt ecommerce automations, signup forms and segmentation for Shopify, WooCommerce and similar storefronts.
Feature-by-Feature Comparison
| Feature | | |
|---|---|---|
| Scores | ||
| Overall Rating | 6.8/10 | 6.8/10 |
| Scalability | 8/10 | 6/10 |
| Ease of Use | 5/10 | 8/10 |
| Customization | 7/10 | 6/10 |
| Security | 8/10 | 5/10 |
| Support | 6/10 | 7/10 |
| Cost | 6/10 | 7/10 |
| Integration | 8/10 | 8/10 |
| Analytics | 7/10 | 6/10 |
| Pricing | ||
| Free plan | Yes | Yes |
| Cheapest paid plan | $15/mo Basic | $16/mo Standard |
| Estimated cost for 10 users | $15/mo Basic | Free Free |
| Features | ||
| Email Marketing | ||
| Landing Pages | Not listed | |
| Webinars | Not listed | |
| SMS Marketing | Not listed | |
| E-commerce Features | Not listed | |
| Segmentation | Not listed | |
| A/B Testing | Not listed | |
Which One Should You Choose?
Why choose Mailgun
- Higher Security score (8/10 vs 5/10)
- Higher Scalability score (8/10 vs 6/10)
- Better fit for enterprise (7/10 vs 4/10)
Why choose Omnisend
- Lower estimated cost for 10 users: Free vs $15/mo
- Higher Ease of Use score (8/10 vs 5/10)
- Higher Support score (7/10 vs 6/10)
- Better fit for marketing teams (7/10 vs 4/10)
Pros & Cons
Mailgun
Pros
- Reviewers repeatedly praise the REST API and documentation as quick for developers to integrate.
- Deliverability and detailed per-domain searchable logs get strong marks from users.
- SOC 2 Type II and ISO 27001 certification, with 2FA, SAML SSO and AES-256 encryption at rest.
- A low entry price and a free tier of 100 emails a day for testing.
Cons
- It is API-first and complicated for non-technical users, with a dated dashboard where settings and logs can be hard to find.
- Several 2025 reviews report automated account suspensions with little warning.
- Short log retention on lower plans (1 day on Free and Basic).
- Reviewers call it costlier than rivals once volume grows, and inbox placement tools are a separate product.
Omnisend
Pros
- The Free plan includes email automation, prebuilt ecommerce workflows, unlimited segmentation, popups and landing pages, which is unusual at no cost.
- Every plan, including Free, comes with 24/7 support and free migration, and recent Shopify reviewers describe smooth moves from Klaviyo with helpful account managers.
- Prebuilt flows for abandoned carts, browse recovery, post-purchase and win-backs can combine email, SMS and web push in one workflow.
- The Shopify app has a 4.7 out of 5 rating from more than 3,200 reviews, with frequent praise for quick setup of forms and campaigns.
- At around 10,000 contacts, published comparisons put Standard at about 132 USD a month, below Klaviyo's comparable price.
Cons
- Since May 2026, new customers can only send SMS on Pro and pay per message with no bundled credits, which raises costs for SMS-heavy stores.
- Advanced reporting is only on Pro, and comparisons rate Omnisend's analytics as less deep than Klaviyo's.
- Prices climb steeply with list size, for example Standard goes from 16 USD at 500 contacts to 132 USD at 10,000, and some reviewers report billing surprises.
- Some merchants report account freezes during compliance reviews, deliverability drops, and slow support when these problems occur.
- Its focus on ecommerce makes it a weak fit for SaaS or service businesses.
