Mailgun vs Amazon SES vs MailerSend vs SMTP Comparison
Mailgun
Starting at $0 /month
- Free Trial
- Large Enterprises
- Medium Business
Mailgun is a reliable email delivery platform and API built for developers, marketers, and growing businesses that need to send, track, validate, and optimize emails at scale. Designed to integrate seamlessly into existi…
Amazon SES
Starting at Contact for pricing
- Large Enterprises
- Medium Business
Amazon SES allows you to send email from your application using Amazon's reliable, scalable, and inexpensive infrastructure. Amazon SES provides simple APIs for developers to send transactional email such as order notifi…
MailerSend
Starting at Contact for pricing
- Freelancers / Consultants
- Large Enterprises
MailerSend™ is a software platform designed specifically to empower email marketers, agencies and ESP platforms send transactional emails. These emails can be for marketing, newsletter, customer support or transactional…
SMTP
Starting at Contact for pricing
- Individuals
- Freelancers / Consultants
SMTP was built to solve the challenges of sending email from devices behind restrictive firewalls or communicating directly with a server over SMTP. It features multiple design elements and components that have been opti…
Amazon SES leads on user satisfaction with a 4.4-star rating across 240 reviews.
Mailgun vs Amazon SES vs MailerSend vs SMTP — at a glance
| Feature | Mailgun | Amazon SES | MailerSend | SMTP |
|---|---|---|---|---|
| Rating | 4.3 / 5 | 4.4 / 5 | — | 3.9 / 5 |
| Reviews | 644 | 240 | — | 16 |
| Starting price | $0 /month | Contact for pricing | Contact for pricing | Contact for pricing |
| Free trial | Yes | No | No | No |
| Free version | No | No | No | No |
| Best for | Large Enterprises, Medium Business, Small Business | Large Enterprises, Medium Business, Small Business | Freelancers / Consultants, Large Enterprises, Medium Business | Individuals, Freelancers / Consultants, Large Enterprises |
| Category | Transactional Email Software | Transactional Email Software | Transactional Email Software | Transactional Email Software |
| Platforms | SaaS/Web/Cloud | SaaS/Web/Cloud | SaaS/Web/Cloud | SaaS/Web/Cloud |
| API | Available | Available | Available | Available |
| Support modes | 24/7 (Live rep), Business Hours, Online | Online | Online | 24/7 (Live rep), Business Hours, Online |
| Certifications | SOC 2, HIPAA, GDPR | SOC 2, HIPAA, GDPR, ISO 27001 | SOC 2, GDPR | — |
| Data residency | US | Global | Global | US |
Key differences between Mailgun and Amazon SES
- Pricing: Mailgun starts at $0 /month. Amazon SES pricing is not publicly listed.
- Free trial: Mailgun offers a free trial; Amazon SES does not.
- User satisfaction: Amazon SES scores higher with a 4.4-star average.
- Deployment: Mailgun supports SaaS/Web/Cloud; Amazon SES supports SaaS/Web/Cloud.
Compare Mailgun vs Amazon SES vs MailerSend vs SMTP — and walk away knowing which one fits.
Which tool fits your team best
Which is actually cheaper for your team size
Where each product wins, per real buyers
Most Transactional Email Software tools look identical on paper. This comparison cuts to the differences that matter — pricing structure, team fit, and what real buyers found after signing up.
Biggest differences
Features
Pricing
Buying details
Security
Buyer feedback
Integrations
Product tour
Other options
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Biggest differences
Start here before you go deeper into features.
API-first email platform ideal for scalable transactional email delivery.
- You need reliable, high-volume transactional email sending with strong deliverability.
- Your team includes developers or marketers requiring flexible API integration and testing tools.
- You want built-in email QA features like accessibility and rendering previews.
- Your organization demands extensive advanced customization beyond standard API capabilities.
- You require immediate, highly responsive support for resolving complex or critical issues.
Best for scalable, cost-effective transactional email within AWS environments.
- You need reliable transactional emails like order and shipment notifications.
- Your team includes developers or DevOps comfortable with API integrations.
- You want deep integration with AWS services and scalable infrastructure.
- You lack developer resources or technical expertise for setup and management.
- Your business operates primarily in AWS regions where SES is unavailable.
Best for small to medium businesses sending streamlined transactional emails.
- You need a simple, low-complexity platform focused on transactional email delivery.
- Your team consists of email marketers, agencies, or customer support handling transactional emails.
- You want to improve open rates while minimizing recipients' bulk email clutter.
- Your organization requires advanced analytics and detailed reporting capabilities.
- You need extensive customization options or integrations with other software.
Individuals, Freelancers / Consultants, Large Enterprises
Mailgun: API-first email platform ideal for scalable transactional email delivery. Amazon SES: Best for scalable, cost-effective transactional email within AWS environments.
Description | Mailgun is a reliable email delivery platform and API built for developers, marketers, and growing businesses that need to send, track, validate, and optimize emails at scale. Designed to ... Read More about Mailgun | Amazon SES allows you to send email from your application using Amazon's reliable, scalable, and inexpensive infrastructure. Amazon SES provides simple APIs for developers to send ... Read More about Amazon SES | MailerSend™ is a software platform designed specifically to empower email marketers, agencies and ESP platforms send transactional emails. These emails can be for marketing, newsletter, ... Read More about MailerSend | SMTP was built to solve the challenges of sending email from devices behind restrictive firewalls or communicating directly with a server over SMTP. It features multiple design elements and ... Read More about SMTP |
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Entry Level Pricing |
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Spotsaas ScoreWhat's this? ↗ | 9.8/10 | 8.7/10 | 7.7/10 | 7.2/10 |
User RatingsBased on verified Spotsaas reviews | ||||
Best Company Size | 11-50 employees51-500 employees | Small BusinessLarge Enterprises | Small BusinessMedium Business | 50 to 500 employees |
Get pricing help | Get pricing help | Get pricing help |
Where each option fits best
See where each product is strongest, which teams it fits, and what causes buyers to keep looking — before you commit.
Based on buyer reviews and verified product data collected by Spotsaas.
Key strengths
- Developer-Friendly Flexibility: Built with an API-first approach, Mailgun offers extensive integration capabilities for developers to customize email delivery based on business logic and platform needs.
- Scalable Performance: With built-in deliverability tools, real-time validation, and support for millions of messages, Mailgun is ideal for high-volume email senders needing enterprise-grade infrastructure.
- Email Testing and QA Tools: Through integrations like Email on Acid, users can preview and test emails for rendering, accessibility, and compliance before hitting send, reducing errors and improving user experience.
No key benefits available yet.
No key benefits available yet.
- Reliable Email Delivery: With SMTP, you can ensure that your emails reach their intended recipients without fail. I’ve seen firsthand how businesses benefit from reduced bounce rates and enhanced communication efficiency.
- Scalability: Whether you’re sending a few emails or millions, SMTP scales effortlessly to accommodate your growing needs. This flexibility has proven invaluable for companies looking to expand their outreach without worrying about technical limitations.
- Security Features: Implementing SMTP protocols enhances the security of your email communications. I recommend leveraging its built-in encryption methods to safeguard sensitive information and instill confidence in your stakeholders.
Best fit
- 11–500 Employees
- SaaS, eCommerce, Digital Media, Fintech, Marketing Agencies, Online Marketplaces
- Email Marketing Manager, Growth Marketer, Product Manager, Developer, CTO, DevOps Engineer, CRM Specialist, Campaign Manager
No best-fit guidance available yet.
No best-fit guidance available yet.
- 50 to 500 employees
- Martech, Fintech, SaaS, E-commerce, and Digital Marketing
- Marketing Managers, IT Administrators, Email Marketing Specialists, Sales Executives, and Customer Success Managers
Reasons buyers look elsewhere
- Users seeking an intuitive drag-and-drop email builder or visual campaign manager might opt for platforms like Mailchimp or ActiveCampaign, which focus more on design-centric features.
- Businesses looking for an all-in-one email + CRM system may favor solutions like HubSpot or Zoho Campaigns that integrate contact management and lead tracking within the same platform.
- As Mailgun is developer-centric, teams without in-house technical expertise may find it harder to implement and manage compared to more user-friendly tools.
No alternatives guidance available yet.
No alternatives guidance available yet.
- Users may seek alternatives to SMTP due to deliverability issues, as emails can often be marked as spam or face filtering challenges, impacting communication effectiveness and business operations.
- Security concerns are a common reason for exploring alternatives; SMTP lacks advanced encryption and authentication measures, making it vulnerable to interception and unauthorized access.
- The increasing need for real-time communication drives users towards alternatives that offer instant messaging or collaboration features, which are not supported by traditional SMTP protocols.
Software Demo
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How do Mailgun, Amazon SES, MailerSend and SMTP Compare on Features?
Total Features | 26 Features | 16 Features | 10 Features | 5 Features |
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Unique Features | No unique features | No unique features | No unique features | No unique features |
Get Quote | Get Quote | Get Quote |
Compare Mailgun, Amazon SES, MailerSend and SMTP on pricing
Review starting price, plan structure, and free-trial access side by side so you can see which option fits your budget and buying process.
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Pricing Page |  | Pricing information not available |  |  |
Other Details
Organization Types supported |
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Platforms Supported |
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Get help choosing | Get help choosing | Get help choosing |
Security & Compliance
Certifications, data handling, and security controls for IT and compliance evaluators.
SOC 2 | ✓ Yes | ✓ Yes | ✓ Yes |
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HIPAA | ✓ Yes | ✓ Yes | ✗ No |
GDPR | ✓ Yes | ✓ Yes | ✓ Yes |
ISO 27001 | ✗ No | ✓ Yes | ✗ No |
Single Sign-On (SSO) | ✓ Yes | — | ✓ Yes |
Multi-Factor Auth (MFA) | ✓ Yes | ✓ Yes | ✓ Yes |
Data Encryption | ✓ Yes | ✓ Yes | ✓ Yes |
Audit Logs | ✓ Yes | ✓ Yes | ✓ Yes |
Data Residency | 🇺🇸 US | 🌐 Global | 🌐 Global |
Mailgun vs Amazon SES vs MailerSend User Reviews & Rating Comparison
User Ratings | No reviews available for the product | |||
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Rating Distribution | No reviews available for this product | |||
Spotsaas Editor’s POV generated by AI | Buyer sentiment Overall positive user sentiment highlights Mailgun's ease of use, strong deliverability, and helpful support, tempered by some concerns over support responsiveness and customization limits. What buyers like
Common complaints
| Buyer sentiment Users generally praise Amazon SES for its cost-effectiveness, scalability, and integration capabilities, though some find setup complex and note regional limitations. What buyers like
Common complaints
| Buyer sentiment Insufficient user feedback and ratings available to determine overall sentiment. What buyers like
Common complaints
| Buyer sentiment Buyer sentiment is mixed to positive across 11 reviews, with clear strengths and a few common watchouts. What buyers like
Common complaints
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Pros and Cons |
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Positive Reviews | No reviews available for the product | No reviews available for the product | No reviews available for the product | No reviews available for the product |
| Negative Reviews | No reviews available for the product | No reviews available for the product | No reviews available for the product | No reviews available for the product |
Media and Screenshots
Screenshots |  8 Screenshots |  5 Screenshots |  1 Screenshots |
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Videos |  1 Videos |  1 Videos |  1 Videos |
Alternatives
Alternatives |
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Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].
Frequently asked questions
- Which is better, Mailgun or Amazon SES?
- Amazon SES edges out the other on user ratings (4.4 vs 4.3). That said, the best pick depends on your use case — use the comparison tables above to evaluate each dimension.
- Do Mailgun and Amazon SES offer a free trial?
- Mailgun offers a free trial. Amazon SES does not.
- What is the starting price of Mailgun vs Amazon SES?
- Mailgun starts at $0 /month. Amazon SES starts at Contact for pricing.
- What are the top alternatives to Mailgun?
- Top alternatives to Mailgun include SMTP, Campaigner, Moosend, SendGrid, SocketLabs.
- What are the top alternatives to Amazon SES?
- Top alternatives to Amazon SES include SMTP, Campaigner, Moosend, Kingmailer, SocketLabs.