Mailgun vs Sendloop: Complete Comparison (2026)
An in-depth comparison of Mailgun and Sendloop 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.
Sendloop
5.8/10
Sendloop is an email marketing platform from Octeth. Small businesses, agencies and high-volume senders use it for newsletters, automated journeys and transactional email.
Feature-by-Feature Comparison
| Feature | | |
|---|---|---|
| Scores | ||
| Overall Rating | 6.8/10 | 5.8/10 |
| Scalability | 8/10 | 6/10 |
| Ease of Use | 5/10 | 6/10 |
| Customization | 7/10 | 6/10 |
| Security | 8/10 | 5/10 |
| Support | 6/10 | 5/10 |
| Cost | 6/10 | 7/10 |
| Integration | 8/10 | 5/10 |
| Analytics | 7/10 | 5/10 |
| Pricing | ||
| Free plan | Yes | Yes |
| Cheapest paid plan | $15/mo Basic | $29/mo Starter |
| Estimated cost for 10 users | $15/mo Basic | Free Free |
| Features | ||
| Email Marketing | ||
| A/B Testing | Not listed | |
| Landing Pages | Not listed | |
| Segmentation | Not listed | |
Mailgun vs Sendloop cost by team size
Mailgun and Sendloop cost the same at 1 user; Sendloop costs less from 5 users.
| Team size | Mailgun | Sendloop |
|---|---|---|
| 1 user | FreeFree | FreeFree |
| 5 users | $15/moBasic | FreeFree |
| 10 users | $15/moBasic | FreeFree |
| 25 users | $15/moBasic | FreeFree |
| 50 users | $15/moBasic | 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 Mailgun
- Higher Security score (8/10 vs 5/10)
- Higher Integration score (8/10 vs 5/10)
- Better fit for developers (9/10 vs 6/10)
- Better fit for enterprise (7/10 vs 5/10)
Why choose Sendloop
- Lower estimated cost for 10 users: Free vs $15/mo
- Higher Ease of Use score (6/10 vs 5/10)
- Higher Cost score (7/10 vs 6/10)
- Better fit for small business (7/10 vs 4/10)
- Better fit for marketing teams (6/10 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.
Sendloop
Pros
- Priced by email volume with unlimited subscribers, so large, rarely mailed lists cost less than on contact-based plans.
- Supports marketing and transactional email in one account on every plan.
- The agency product, Studio, centralises the audiences of multiple clients.
- Offers an on-premise deployment and a managed deliverability service for high-volume senders.
Cons
- A competitor reports the blog has not been updated since 2021 and the X account since 2017, which raises questions about how actively it is developed.
- Independent reviews are few and mostly old.
- There is no public security or compliance documentation.
- Most integrations depend on Zapier rather than native connectors.
Not sold on either?
Frequently Asked Questions
Mailgun scores higher on our Marketing criteria: 6.8/10 against 5.8/10 for Sendloop. The largest gap is in Integration: 8/10 for Mailgun and 5/10 for Sendloop.
Sendloop costs less for 10 users: free on its Free plan, against about $15/mo on its Basic plan for Mailgun, billed monthly.
Yes, both Mailgun and Sendloop have a free plan.
Mailgun is the better fit for developers: we rate it 9/10 for them, against 6/10 for Sendloop.
