Side by side
darkzwarmer vs EmailWarmup
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 APIWeb
EmailWarmup provides mailbox warmup exchanges, engagement actions, and adjustable ramp-up speeds, with stated protections for credentials and personal email content. Note that it does not send campaigns or guarantee inbox placement, and paid access currently involves manual enablement.
Visit EmailWarmupThe facts
| darkzwarmer | EmailWarmup | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Linux, Mac, Self-hosted, Windows | API, Web |
| Lowest paid plan | Not published | Starter: $19 a month |
| Plans published | None | 5 |
| Maker | Not published | Not published |
| Website | github.com | emailwarmup.online |
| On email warmup software | #1 of 24 | #2 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
EmailWarmup: what it does well
- Offers slow, medium, and fast ramp-up schedules.
- Supports threaded replies, reads, stars, and delivery checks.
- Gmail connects with OAuth; SMTP/IMAP connections are supported.
- Personal email content is not read or stored, per the service.
- Multiple mailboxes are supported.
What to know first
- The service does not send outreach campaigns.
- It cannot fix an already blocklisted domain.
- Inbox placement is not guaranteed.
- Paid limits are enforced, but billing is not connected yet.
Alternatives to darkzwarmer Alternatives to EmailWarmup The whole list