Mailgun vs Moosend vs Campaigner 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…
Moosend
Starting at Contact for pricing
- Large Enterprises
- Medium Business
Moosend is a powerful Email Marketing Software for small businesses that's easy to use and affordable, with a robust feature set. With its user-friendly interface and newbie-friendly training, Moosend makes it easy to cr…
Campaigner
Starting at $14 /month
- Free Trial
- Large Enterprises
- Medium Business
Campaigner is an email marketing and automation platform used by mid-size marketing teams that need behavior-triggered campaigns across email and other channels. It solves the batch-and-blast problem by letting marketers…
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…
Mailgun vs Moosend vs Campaigner vs SMTP — at a glance
| Feature | Mailgun | Moosend | Campaigner | SMTP |
|---|---|---|---|---|
| Rating | 4.3 / 5 | 4.3 / 5 | 5.0 / 5 | 3.9 / 5 |
| Reviews | 644 | 416 | 2 | 16 |
| Starting price | $0 /month | Contact for pricing | $14 /month | Contact for pricing |
| Free trial | Yes | No | Yes | No |
| Free version | No | No | No | No |
| Best for | Large Enterprises, Medium Business, Small Business | Large Enterprises, Medium Business, Small Business | Large Enterprises, Medium Business, Small Business | Individuals, Freelancers / Consultants, Large Enterprises |
| Category | Transactional Email Software | Email Marketing Software | Email Marketing Software | Transactional Email Software |
| Integrations | — | — | 7+ apps | — |
| 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 | Business Hours, Online | 24/7 (Live rep), Online | 24/7 (Live rep), Business Hours, Online |
| Certifications | SOC 2, HIPAA, GDPR | GDPR | GDPR | — |
| Data residency | US | US | US | US |
Key differences between Mailgun and Moosend
- Pricing: Mailgun starts at $0 /month. Moosend pricing is not publicly listed.
- Free trial: Mailgun offers a free trial; Moosend does not.
- Deployment: Mailgun supports SaaS/Web/Cloud; Moosend supports SaaS/Web/Cloud.
Compare Mailgun vs Moosend vs Campaigner 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.
Large Enterprises, Medium Business, Small Business
Large Enterprises, Medium Business, Small Business
Individuals, Freelancers / Consultants, Large Enterprises
Mailgun typically suits Large Enterprises and Medium Business. Moosend tends to fit Large Enterprises and Medium Business better. The right choice depends on your team size, workflow, and whether a free trial matters.
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 | Moosend is a powerful Email Marketing Software for small businesses that's easy to use and affordable, with a robust feature set. With its user-friendly interface and newbie-friendly ... Read More about Moosend | Campaigner is an email marketing and automation platform used by mid-size marketing teams that need behavior-triggered campaigns across email and other channels. It solves the ... Read More about Campaigner | 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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Spotsaas ScoreWhat's this? ↗ | 9.8/10 | 8.8/10 | 8.8/10 | 7.2/10 |
User RatingsBased on verified Spotsaas reviews | ||||
Best Company Size | 11-50 employees51-500 employees | 1 to 500 employees | 50 to 500 employees | 50 to 500 employees |
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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.
- Email Marketing: Moosend is an intuitive platform that lets teams create, automate, and analyze email campaigns, keeping you connected with your audience without unnecessary complexity.
- Advanced Automation Features: The reliable automation capabilities let you trigger personalized messages based on user behavior. This means you can nurture leads effectively while your team focuses on strategic initiatives.
- Real-Time Analytics: Moosend provides comprehensive reporting tools that give you insights into campaign performance. This data-driven approach helps executives make informed decisions to optimize marketing strategies and boost ROI.
- Email Marketing Automation: With Campaigner, managers can easily automate their email campaigns, saving time while keeping all customers engaged. This lets you focus on strategy while our platform handles the routine tasks.
- Advanced Segmentation Capabilities: Administrators will appreciate the powerful segmentation tools that let you create highly targeted messaging. This keeps your emails relevant to specific audience segments, ultimately driving higher engagement rates and conversions.
- Analytics and Reporting: Executives benefit from Campaigner's complete analytics dashboard, which provides actionable insights into campaign performance. You can easily track open rates, click-through rates, and ROI to make informed decisions.
- Reliable Email Delivery: With SMTP, your emails reach their intended recipients consistently. Businesses benefit from reduced bounce rates and improved communication efficiency.
- Scalability: Whether you're sending a few emails or millions, SMTP scales easily to meet your growing needs. This flexibility helps companies expand their outreach without hitting technical limits.
- Security Features: SMTP protocols improve the security of your email communications. Use its built-in encryption methods to protect sensitive information and build stakeholder trust.
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
- 1 to 500 employees
- Martech, SaaS, E-commerce, Digital Marketing, and Nonprofit sectors
- Marketing Managers, E-commerce Managers, Digital Marketers, Content Creators, and Marketing Automation Specialists
- 50 to 500 employees
- Martech, Revtech, SaaS, and Consulting
- Marketing Managers, Email Marketing Specialists, Digital Marketing Coordinators, and Campaign Strategists
- 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
- Lacks visual email builder — teams prioritizing design-heavy campaigns typically switch to Mailchimp or ActiveCampaign
- Missing integrated CRM — businesses needing contact management and lead tracking in one platform often choose HubSpot or Zoho Campaigns instead
- Requires developer resources — non-technical teams find implementation and ongoing management difficult without engineering staff
- Lacks advanced automation workflows — teams needing complex multi-step sequences often switch to HubSpot or ActiveCampaign
- Price-sensitive buyers find cheaper alternatives like Mailchimp or Klaviyo that cover basic email marketing at half the cost
- Limited onboarding and support — companies wanting hands-on training or dedicated account management choose platforms with stronger customer success teams
- Pricing starts at $20/month for basic plans; teams under 10 people often switch to Mailchimp or ConvertKit for lower entry costs
- Interface requires 3–4 clicks for common tasks like segmentation; competitors like ActiveCampaign complete the same workflows in 1–2 clicks
- Automation limited to 5 conditional branches per workflow; teams needing 10+ branches migrate to HubSpot or Klaviyo
- 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, Moosend, Campaigner and SMTP Compare on Features?
Total Features | 26 Features | 22 Features | 20 Features | 5 Features |
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Unique Features | No unique features | No unique features | No unique features | No unique features |
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Compare Mailgun, Moosend, Campaigner 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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Other Details
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Security & Compliance
Certifications, data handling, and security controls for IT and compliance evaluators.
SOC 2 | ✓ Yes | — |
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HIPAA | ✓ Yes | ✗ No |
GDPR | ✓ Yes | ✓ Yes |
ISO 27001 | ✗ No | — |
Single Sign-On (SSO) | ✓ Yes | — |
Multi-Factor Auth (MFA) | ✓ Yes | — |
Data Encryption | ✓ Yes | ✓ Yes |
Audit Logs | ✓ Yes | — |
Data Residency | 🇺🇸 US | 🇺🇸 US |
Mailgun vs Moosend vs Campaigner User Reviews & Rating Comparison
User Ratings | 4.3 (based on 416 reviews) | |||
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Rating Distribution | ||||
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 Buyer sentiment is positive across 416 reviews, with strong overall satisfaction. What buyers like
Common complaints
| Buyer sentiment Buyer sentiment is very strong across 2 reviews, with consistently positive feedback. 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 |
Integrations
Integration with other apps | No Integration information available. | No Integration information available. | No Integration information available. |
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List of Customers
Customers | No Customers information available. | No Customers information available. |  LG  The UPS Store  CLARINS | No Customers information available. |
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Media and Screenshots
Screenshots |  8 Screenshots |  4 Screenshots |
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Videos |  1 Videos |  3 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 Moosend?
- Mailgun and Moosend are closely matched with equal user ratings of 4.3. The right choice depends on your team size, budget, and specific Email Marketing Software needs.
- Do Mailgun and Moosend offer a free trial?
- Mailgun offers a free trial. Moosend does not.
- What is the starting price of Mailgun vs Moosend?
- Mailgun starts at $0 /month. Moosend 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 Moosend?
- Top alternatives to Moosend include Campaigner, SMTP, DirectIQ, Benchmark Email, Mailjet.