Side by side
darkzwarmer vs Warmforge
Both stand on email warmup software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan LinuxMacSelf-hosted+1
darkzwarmer automates warmup traffic among inboxes across domains that the user controls. Setup depends on multiple domains, mail delivery and receiving services, and a continuously available runtime.
Visit darkzwarmer
Free plan APIMacWeb+1
Warmforge combines automated warm-up with mailbox health checks and placement testing. Factor in the purchased slot requirement and the plan’s billing terms when deciding whether it fits.
Visit WarmforgeThe facts
| darkzwarmer | Warmforge | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Linux, Mac, Self-hosted, Windows | API, Mac, Web, Windows |
| Lowest paid plan | Not published | Email Warm Up: $10 a month |
| Plans published | None | 3 |
| Maker | Not published | Not published |
| Website | github.com | warmforge.ai |
| On email warmup software | #1 of 24 | #5 of 24 |
darkzwarmer: what it does well
- Free and open source under the MIT license
- Configurable SMTP with several listed provider examples
- SQLite state supports resuming after crashes or reboots
- Windows, Linux, and macOS operation is described
What to know first
- Requires Python 3.11 or later
- Requires at least two user-owned domains
- Needs an always-on machine or VPS
Warmforge: what it does well
- Checks DNS, MX records, and blacklist status
- One free placement test per month on each plan
- Offers API access and Forge CLI support
- Mailbox and test subscriptions can be canceled anytime
What to know first
- Warming requires purchased mailbox slots
- Each slot covers only one mailbox
- No free trial for mailbox warming
Alternatives to darkzwarmer Alternatives to Warmforge The whole list