MailHog vs DragonFly Mail Agent
A side-by-side comparison of two self-hosted mail servers options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
MailHog
Email testing tool with a fake SMTP server
VS
DragonFly Mail Agent
Tiny mail transfer agent for outbound delivery
| Feature | MailHog | DragonFly Mail Agent |
|---|---|---|
| Category | Mail Servers | Mail Servers |
| License | MIT | BSD-3-Clause |
| Language | Go | C |
| Setup difficulty | Easy | Easy |
| Min. RAM | 64 MB | 32 MB |
| Deployment | docker, binary, source | binary, source |
| GitHub stars | ★ 16,107 | ★ 263 |
| First released | 2014 | 2008 |
| Replaces | Mailtrap | Sendmail, Postfix |
Why pick each one
Choose MailHog if…
- Released under the MIT license
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- Mature project with 16.1k GitHub stars
Choose DragonFly Mail Agent if…
- Released under the BSD-3-Clause license
- Easy to set up — beginner-friendly
- Written in C
- Tiny footprint — runs in 32 MB RAM
Frequently asked questions
Is MailHog or DragonFly Mail Agent better?
Neither is universally better. MailHog has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are MailHog and DragonFly Mail Agent free and open-source?
Yes. MailHog is licensed under MIT and DragonFly Mail Agent under BSD-3-Clause. Both can be self-hosted at no software cost.
Can I run MailHog and DragonFly Mail Agent with Docker?
MailHog: yes. DragonFly Mail Agent: check the project docs for container support.