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Warmbox

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What is Warmbox?

Warmbox is an AI powered email warmup service that connects to a mailbox and exchanges realistic, GPT generated emails across a private network of more than 35,000 inboxes spanning over 100 countries to build sender reputation. It automatically removes warmup emails from spam folders, opens and replies to a portion of them, and generates the positive engagement signals mailbox providers look for.

Plans are priced by the number of inboxes warmed, with each tier bundling a matching number of team seats and a daily sending cap that increases with the plan. Warmbox also runs blacklist and DNS checks covering SPF, DKIM, and DMARC, and supports Gmail, Outlook, Yahoo, and other providers through OAuth or SMTP connections.

Key Features of Warmbox

Here are the powerful features that make Warmbox stand out from the competition. Packed with innovative tools and advanced functionalities, this software offers a range of benefits.

  • GPT-4 generated realistic warmup emails
  • Private network of 35,000+ inboxes across 100+ countries
  • Automatic spam folder removal and email opens
  • Customizable warmup recipes (growth, flat, random, custom)
  • Deliverability and reputation analytics
  • Blacklist and DNS (SPF/DKIM/DMARC) monitoring
  • Multi-provider support (Gmail, Outlook, Yahoo, SMTP, and more)
  • GDPR and CCPA compliant data handling

Warmbox Pricing

Here are the pricing plans for Warmbox. Choose the plan that best fits your requirements and budget.

Solo

$19/month

1 inbox, 50 emails/day, 1 team member

Free Trial

$15/month on annual billing.

Start-up

$79/month

3 inboxes, 250 emails/day, 3 team members

Free Trial

$69/month on annual billing.

Growth

$159/month

6 inboxes, 500 emails/day, 6 team members

Free Trial

$139/month on annual billing.

Enterprise/Agency

Custom

Higher inbox and volume needs

Free Trial

Custom plans for enterprises, agencies, and corporates with larger sending volumes.

Warmbox Specifications

Get a closer look at the technical specifications and system requirements for Warmbox. Find out if it's compatible with your operating system and other software.

Software Tagline :
AI powered email warmup to build sender reputation before campaigns
Deployment :
  • cloud based
Subscription Plan :
monthly
Desktop Platforms :
  • web app
Mobile Platforms :
Language Support :
english
Target Audience :
  • freelancers
  • startups
  • smes
  • agencies
Available Support :
  • email
  • live support
Integrations :
Gmail, Outlook 365, Yahoo Mail, iCloud, AOL, Yandex, Zoho, SendGrid, Sendinblue, Amazon SES, Mailgun, SMTP
Product Url :
https://www.warmbox.ai
API Available :
No
Free Trial Available :
No
Run On Mobile Browser :
Yes
Free Plan Available :
No
Customization Available :
Yes

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Overall Warmbox Reviews

Here's our unbiased review of Warmbox. Discover how our team of experts rates its features, ease of use, customer support, and other aspects that contribute to its overall appeal.

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Warmbox Pros and Cons

Warmbox FAQs

Warmbox typically needs 15 to 30 days of uninterrupted warmup before users see the first results in inbox placement.

No free trial or complimentary plan is publicly listed; Enterprise customers can request a custom quote.

It supports Gmail, Outlook, Yahoo, iCloud, AOL, Yandex, Zoho, SendGrid, Sendinblue, Amazon SES, Mailgun, and generic SMTP.

Pricing scales by the number of inboxes warmed, with each tier including a matching number of team seats and a higher daily email cap.

Yes, it uses GPT-4 to generate different, natural-looking emails each time rather than repeating templates.