Warmup Inbox
Warmup Inbox automates email warmup to help build sender reputation and improve the chances that cold emails reach inboxes instead of spam folders.
What Warmup Inbox is
Warmup Inbox automates email warmup to help build sender reputation and improve the chances that cold emails reach inboxes instead of spam folders. Its warmup messages engage with a network the company describes as more than 30,000 real inboxes. Monitoring covers inbox placement, spam and bounce rates, sender reputation, DNS records, and blacklist status. It connects with providers including Gmail and Google Workspace, Outlook and Microsoft 365, Zoho, Amazon SES, Mailgun, SendGrid, Brevo, and custom SMTP inboxes; connection methods include OAuth where possible, or SMTP and API where needed. Paid plans list outreach sequences, dashboards, AI-generated warmup content, language warmup, custom templates, and warmup settings, with availability varying by plan. The service is available on web and through an API. The company says early improvement may appear within 3 to 7 days, while a full warmup ramp takes at least 14 to 21 days.
Good
- Monitors inbox placement, spam, and bounce rates
- Tracks DNS records and blacklist status
- Connects with major email providers and custom SMTP
- Includes API access
- Seven-day trial without upfront card details
Watch out
- No free plan is listed
- Basic costs $15/mo billed annually
- Full warmup ramp takes at least 14 to 21 days
Who it suits
Warmup Inbox is presented for sales development teams, marketers, agencies, and recruiters who want to warm inboxes and monitor sender reputation. Its listed connections cover a range of email providers and custom SMTP inboxes.
Verdict
Warmup Inbox combines email warmup with monitoring for placement, reputation, and related indicators. Consider its annual entry price and the stated ramp-up timeline when deciding whether it fits your sending workflow.
Plans and prices
From Warmup Inbox's own pricing page, checked 4 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Basic | $15 a month | 75 warmup messages/day · replies up to 25% · one inbox price shown · $15/mo for 1 inbox; $180 billed yearly |
| Pro | $49 a month | 250 warmup messages/day · replies up to 45% · one inbox price shown · $49/mo for 1 inbox; $588 billed yearly |
| Max | $79 a month | 1,000 warmup messages/day · replies up to 50% · one inbox price shown · $79/mo for 1 inbox; $948 billed yearly |
| 51 inboxes and up | Priced on request | 51 inboxes and up · multi-client workspaces · consolidated billing · dedicated onboarding and support · Personalized quote; book a call |
The facts
Each one read from Warmup Inbox's own pages, with the date it was checked.
What it does
- Additional features
- Paid plans list outreach sequences, dashboards, AI-generated warmup content, language warmup, custom templates, and warmup settings, with availability varying by plan.checked 4 Oct 2026
- Connection
- The company says it supports OAuth where possible and SMTP or API connections where needed.checked 4 Oct 2026
- Integrations
- Listed providers include Gmail and Google Workspace, Outlook and Microsoft 365, Zoho, Amazon SES, Mailgun, SendGrid, Brevo, and custom SMTP inboxes.checked 4 Oct 2026
- Monitoring
- The service tracks inbox placement, spam and bounce rates, sender reputation, DNS records, and blacklist status.checked 4 Oct 2026
- Privacy
- The privacy policy says the platform connects to an email inbox and does not scan inboxes for purposes other than generating and sending emails for registered users.checked 4 Oct 2026
- Purpose
- Warmup Inbox automates email warmup to build sender reputation and help cold emails reach inboxes rather than spam folders.checked 4 Oct 2026
- Security
- The privacy policy says the company uses SSL or TLS to protect sensitive information and passwords during transmission and uses industry security standards for data transmission and storage.checked 4 Oct 2026
- Support
- The company offers support chat, email contact, and demo booking; Pro and Max plans list priority and premium support respectively.checked 4 Oct 2026
- Warmup network
- The product says its warmup emails engage with a network of more than 30,000 real inboxes.checked 4 Oct 2026
- Warmup timeline
- The company says initial improvements may appear within 3 to 7 days and a full warmup ramp takes at least 14 to 21 days.checked 4 Oct 2026
- Who it serves
- The site presents the service for sales development teams, marketers, agencies, and recruiters.checked 4 Oct 2026
The company
- Company
- The contact page identifies CyberPanda s. r. o. as the company behind Warmup Inbox and gives its registered address in Bratislava, Slovak Republic.checked 4 Oct 2026
- Headquarters
- Bratislava, Slovak Republicchecked 28 Sep 2026
Money
- Trial
- The paid plans include a 7-day free trial with no credit card required upfront, and the pricing page says users can cancel during the trial without being charged.checked 4 Oct 2026
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