Stalwart Mail Server vs WildDuck
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?
Stalwart Mail Server
Modern all-in-one mail server in a single binary
VS
WildDuck
Scalable IMAP and POP3 mail server with REST API
| Feature | Stalwart Mail Server | WildDuck |
|---|---|---|
| Category | Mail Servers | Mail Servers |
| License | AGPL-3.0 | EUPL-1.2 |
| Language | Rust | JavaScript |
| Setup difficulty | Medium | Hard |
| Min. RAM | 512 MB | 1,024 MB |
| Deployment | docker, binary, bare-metal | docker, bare-metal |
| GitHub stars | ★ 14,059 | ★ 2,107 |
| First released | 2020 | 2017 |
| Replaces | Microsoft Exchange, Google Workspace | Microsoft Exchange, Gmail |
Why pick each one
Choose Stalwart Mail Server if…
- Single modern binary
- Strong security defaults
Frequently asked questions
Is Stalwart Mail Server or WildDuck better?
Stalwart Mail Server is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider WildDuck if its specific feature set fits your needs better.
Are Stalwart Mail Server and WildDuck free and open-source?
Yes. Stalwart Mail Server is licensed under AGPL-3.0 and WildDuck under EUPL-1.2. Both can be self-hosted at no software cost.
Can I run Stalwart Mail Server and WildDuck with Docker?
Stalwart Mail Server: yes. WildDuck: yes.