Mailgun
Email Service for Developers
ProtonMail
Secure email that respects your privacy, brought to you.
Updated February 2026
| Mailgun | ProtonMail | |
|---|---|---|
| Rating | 5.0★ | 4.6★ |
| Reviews | 6 | 10 |
| Pros | 0 | 9 |
| FactScore™ | 42.3 | 47.9 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Mailgun — Pros
No unique pros listedBoth tools — Pros
—Only in ProtonMail — Pros
Security and privacy Easy to use Commitment to mission Modern UI VPN features Customer support End to end encryption Free tier Spam protectionOnly in Mailgun — Cons
—Both tools — Cons
—Only in ProtonMail — Cons
Interoperability issues Cost effectiveness Limited free tier functionality Linux supportDetails
| Mailgun | ProtonMail | |
|---|---|---|
| Categories | Email clients, Automation tools, Email marketing | Email clients, Safety and Privacy platforms |
| Platforms | Web | Web · iOS · Android |
| Became Popular | January 26, 2015 | March 17, 2016 |
| Website | www.mailgun.com | protonmail.com |
Who Should Pick Which?
Choose Mailgun if...
- No unique pros listed
Choose ProtonMail if...
- Security and privacy
- Easy to use
- Commitment to mission
With a FactScore™ of 42.3 vs 47.9, ProtonMail leads in community reception. Mailgun uniquely offers No unique pros listed, while ProtonMail stands out for Security and privacy and Easy to use.
What Users Say
Mailgun
Mailgun stands out for its robust email delivery infrastructure, high deliverability rates, and advanced analytics. It offers easy integration with powerful APIs, comprehensive email tracking, and ...
Shoutout to Mailgun for their powerful email API, which integrates seamlessly with MailTock to keep your transactional emails on track.
Email delivery we can actually rely on. Onboarding emails, waiting list notifications — all powered by Mailgun.
ProtonMail
Protonmail makes the mail service secure. We need more products like this. However, it might be more cost effective.
ProtonMail is the best alternative to Gmail I know. Their commitment to privacy, the free tier, and the modern UI make it a no-brainer when looking for a valid email provider.
Great email service. VPN has some interoperability issues with things like pocketcasts.
Related Comparisons
Frequently Asked Questions
Which is better, Mailgun or ProtonMail?
Based on FactScore™, ProtonMail leads with a score of 47.9 vs 42.3. ProtonMail has a higher rating of 4.6★ compared to 5.0★.
What are the pros of Mailgun compared to ProtonMail?
Mailgun uniquely offers: No unique pros listed.
What are the pros of ProtonMail compared to Mailgun?
ProtonMail uniquely offers: Security and privacy, Easy to use, Commitment to mission, Modern UI, VPN features.
Is Mailgun better rated than ProtonMail?
Mailgun is rated 5.0★ from 6 reviews. ProtonMail is rated 4.6★ from 10 reviews.
What is the FactScore™ of Mailgun and ProtonMail?
FactScore™ weighs rating and review volume together. Mailgun scores 42.3 and ProtonMail scores 47.9.
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