MailerSend vs Omnisend: Complete Comparison (2026)
An in-depth comparison of MailerSend and Omnisend to help you choose the right tool for your business.
Last updated: November 2026
MailerSend
6.9/10
MailerSend is a transactional email and SMS API with SMTP relay and a template builder, aimed at developers and businesses sending app-triggered messages.
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 | 6.9/10 | 6.8/10 |
| Scalability | 7/10 | 6/10 |
| Ease of Use | 8/10 | 8/10 |
| Customization | 6/10 | 6/10 |
| Security | 6/10 | 5/10 |
| Support | 8/10 | 7/10 |
| Cost | 7/10 | 7/10 |
| Integration | 7/10 | 8/10 |
| Analytics | 6/10 | 6/10 |
| Pricing | ||
| Free plan | Yes | Yes |
| Cheapest paid plan | $7/mo Hobby | $16/mo Standard |
| Estimated cost for 10 users | $110/mo Professional | 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 MailerSend
- Higher Scalability score (7/10 vs 6/10)
- Higher Security score (6/10 vs 5/10)
- Better fit for enterprise (6/10 vs 4/10)
Why choose Omnisend
- Lower estimated cost for 10 users: Free vs $110/mo
- Higher Integration score (8/10 vs 7/10)
- Better fit for marketing teams (7/10 vs 4/10)
- Better fit for small business (9/10 vs 7/10)
Pros & Cons
MailerSend
Pros
- Developers can send through a REST API or an SMTP relay, with SDKs and connectors for Laravel, Django, Rails, Symfony, Supabase and Firebase.
- A free tier of 500 emails and a $7 Hobby plan make it cheap to start.
- Capterra reviewers repeatedly praise its responsive support and clear documentation.
- Built-in blocklist and DMARC monitoring help teams protect deliverability.
- Starter and higher plans add an SMS API, and a WhatsApp add-on is available.
Cons
- It is built for transactional email, not full marketing campaign management.
- Reviewers report sudden throttling or account suspensions after bounce or complaint thresholds are crossed.
- Free and Hobby plans keep only one day of activity history.
- SMS is limited to the USA and Canada.
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.
