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Warmbox versus Warmy.io: an honest Mailbox Warmup comparison
A comparison between Warmbox and Warmy.io, including strengths, considerations, and the Mailbox Warmup features that matter.
| The essentials |  Warmy.io Sign up for a 7-Day TrialAuto All-In-One Tool For Email Deliverability To Make Your Email Channel Reliable |
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Overview
The primary facts and short summaries for each product.
| Primary fact | $15/monthStarting at · With the solo plan | $49/mailboxPlans starting at · 7-day free trial with no credit card required |
|---|---|---|
| Overview | Warmbox is a reliable email warmup tool with transparent pricing and automated spam removal that effectively improves sender reputation and inbox placement for teams sending cold email at volume, serving as an essential maintenance layer to ensure deliverability without replacing the need for strong offers or verified lists. | Warmy.io delivers premium warm-up automation at a fraction of the cost, so start your free trial today and watch your inbox placement skyrocket without spending hours on technical setup. |
Email Integrations
See which email platforms work with the software.
| Email Integration | Google Workspace, Microsoft 365, Gmail, Outlook, Yahoo, iCloud, SES, AOL, SendGrid, Yandex, Brevo, Mailgun, Zoho, Custom SMTP senders | Google Workspace, Microsoft 365, Gmail, SES, SendGrid, Brevo, Mailgun, Zoho, Custom SMTP senders |
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Mailbox warmup
| Mailboxes included | 6 | Not applicable |
|---|---|---|
| Unlimited mailbox connections | No | Yes |
| Warm-up messages per day | 500 | Not specified |
| Reply control | Yes | Not specified |
| Maximum reply rate (%) | 45 | Not specified |
| Gradually increases sending | Yes | Yes |
| Choose sending hours | Yes | Yes |
| Activity Dashboard | Yes | Yes |
| Choose receiving providers | Not specified | Yes |
| Use your own warmup copy | Not specified | Yes |
| Automatic warmup replies | Yes | Yes |
Additional details
Product-specific details outside the shared category template.
| Deliverability Testing Separate Inbox Placement Test | Not specified | Yes |
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| Deliverability Testing Results By Receiving Provider | Not specified | Yes |
| Deliverability Testing Spf Checks | Yes | Yes |
| Deliverability Testing Dkim Checks | Yes | Yes |
| Deliverability Testing Dmarc Checks | Yes | Yes |
| Deliverability Testing Explains Authentication Fixes | Yes | Not specified |
| Deliverability Testing Checks Domain Blocklists | Yes | Yes |
| Deliverability Testing Google Postmaster Integration | Not specified | Yes |
| Dmarc Monitoring Ongoing Dmarc Sender Reports | Not specified | Yes |
Strengths & details
Editorial considerations and links to each complete product profile.
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| Explore | Full product details ↗ | Full product details ↗ |
Details are shown as provided. “Not specified” means information has not been supplied.