Warmbox is unclaimed —

Warmbox

Warm-up your cold email inbox. And never land in spam anymore.·warmbox.ai

$15–$159/mo · No free plan See pricing ↓

Warmbox is an AI-based email warm-up tool that connects to a user's email inbox and automatically sends and interacts with emails to raise inbox reputation and improve deliverability. It uses a private network of thousands of inboxes to simulate natural human email interactions, and provides monitoring tools such as spam score tracking and a blacklist/DNS checker. It supports multiple email providers including Gmail, Outlook, Yahoo, iCloud, AOL, Yandex, Zoho, Sendgrid, Sendinblue, Amazon SES, Mailgun, and any SMTP inbox.

What it's for

Warm up a cold email inbox before running outreach campaignsIncrease email deliverability and avoid landing in spamMonitor spam score and inbox reputationCheck IP/domain blacklist status and DNS records (SPF, DKIM, DMARC)Manage multiple inboxes and team members for agencies

Features 17

Auto-remove emails from spam
Auto-reply to emails
Automated email interactions
Detailed help center
Fully custom warm-up settings
Growth, Flat or Random warm-up modes
Human-realistic email generation (GPT4 & Hybrid)
In-app onboarding
Live chat support
Live Email Checker (DNS, Blacklist)
Mark emails as favorite
Multi-account support for agencies
Private inbox network (+35,000 inboxes)
Reporting & dashboard analytics
Spam score monitoring
Team member management
Warm-up scheduling

At a glance

TypeWeb app

DeploymentCloud

PlatformsWeb

Forsales teams, marketing teams, start-ups, agencies, enterprises

Integrations

AOLGmailiCloudSendgridYahoo MailYandexZohoSMTPMailgunSendinblueAmazon SESOutlook

Complianceself-reported

CCPAGDPR

Pricing

A free IP Blacklist & DNS settings checker tool is offered separately from the paid warm-up plans. The 'Team' plan is custom/quote-based for larger needs.

Solo$19/mo

1 inbox warm-up, 50 emails/day, 1 team member, Premium support

1 inbox warm-up, 50 emails/day, 1 team member

Start-up$79/mo

3 inbox warm-up, 250 emails/day, 3 team members, Premium support

3 inbox warm-up, 250 emails/day, 3 team members

Growth$159/mo

6 inbox warm-up, 500 emails/day, 6 team members, Enterprise support

6 inbox warm-up, 500 emails/day, 6 team members

TeamQuote

Quote-based custom plan, contact sales via chat

Custom needs / flexible sending volumes