Side by side
Unspam.email vs Warmforge
Both stand on email deliverability software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIWeb
Unspam.email combines deliverability checks, previews, monitoring and API access. Review the Free plan limits and data handling details if test emails contain sensitive material.
Visit Unspam.email
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
| Unspam.email | Warmforge | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Web | API, Mac, Web, Windows |
| Lowest paid plan | Custom plan: $5 a month | Email Warm Up: $10 a month |
| Plans published | 7 | 3 |
| Maker | Not published | Not published |
| Website | unspam.email | warmforge.ai |
| On email deliverability software | #15 of 31 | #11 of 31 |
Unspam.email: what it does well
- Tests inbox placement across major providers.
- Previews cover more than 50 clients and devices.
- Scheduled tests can trigger decline alerts.
- API supports multiple sending services and SMTP.
- Free plan includes 21 tests per month.
What to know first
- Free plan excludes DMARC monitoring and full API access.
- Free plan data retention is 14 days.
- Submitted test email content and headers are stored.
- AI reports send submitted content and results to OpenAI.
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
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