Loops vs MailerSend: Complete Comparison (2026)
An in-depth comparison of Loops and MailerSend to help you choose the right tool for your business.
Last updated: November 2026
Loops
6.8/10
Loops is an email platform for SaaS companies that combines marketing campaigns, event-triggered lifecycle automations and transactional email in one tool.
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.
Feature-by-Feature Comparison
| Feature | | |
|---|---|---|
| Scores | ||
| Overall Rating | 6.8/10 | 6.9/10 |
| Analytics | 6/10 | 6/10 |
| Cost | 7/10 | 7/10 |
| Customization | 6/10 | 6/10 |
| Ease of Use | 8/10 | 8/10 |
| Integration | 7/10 | 7/10 |
| Scalability | 7/10 | 7/10 |
| Security | 6/10 | 6/10 |
| Support | 6/10 | 8/10 |
| Pricing | ||
| Free plan | Yes | Yes |
| Cheapest paid plan | $49/mo Growth | $7/mo Hobby |
| Estimated cost for 10 users | Free Free | $110/mo Professional |
| Features | ||
| Email Marketing | ||
| A/B Testing | Not listed | |
| Segmentation | Not listed | |
| SMS Marketing | Not listed | |
Loops vs MailerSend cost by team size
Loops and MailerSend cost the same at 1 user; Loops costs less from 5 users.
| Team size | Loops | MailerSend |
|---|---|---|
| 1 user | FreeFree | FreeFree |
| 5 users | FreeFree | $7/moHobby |
| 10 users | FreeFree | $110/moProfessional |
| 25 users | FreeFree | $110/moProfessional |
| 50 users | FreeFree | $110/moProfessional |
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 Loops
- Lower estimated cost for 10 users: Free vs $110/mo
- Better fit for marketing teams (7/10 vs 4/10)
Why choose MailerSend
- Higher Support score (8/10 vs 6/10)
- Better fit for agencies (7/10 vs 3/10)
- Better fit for e-commerce (6/10 vs 2/10)
Pros & Cons
Loops
Pros
- Marketing, lifecycle and transactional email share one contact record, so there is no data syncing between tools.
- Paid plans include unlimited sends and no seat fees, and unsubscribed contacts do not count toward the bill.
- Every feature, including split testing, is available on every plan, including the free one.
- The Goals feature measures conversions such as upgrades, not only opens and clicks.
- The REST API, SDKs and native Stripe, Clerk and Supabase integrations make event-triggered emails straightforward for developers.
Cons
- Reviewers say it fits ecommerce, agencies and newsletter-first businesses poorly.
- Automation and behavioural segmentation are shallower than Customer.io's.
- It sends email only, with no SMS or push channels.
- Costs rise steadily as the contact list grows.
- Free-plan emails carry Loops branding.
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.
Not sold on either?
Frequently Asked Questions
MailerSend scores higher on our Marketing criteria: 6.9/10 against 6.8/10 for Loops. The largest gap is in Support: 6/10 for Loops and 8/10 for MailerSend.
Loops costs less for 10 users: free on its Free plan, against about $110/mo on its Professional plan for MailerSend, billed monthly.
Yes, both Loops and MailerSend have a free plan.
MailerSend is the better fit for agencies: we rate it 7/10 for them, against 3/10 for Loops.
