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  1. Home
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  5. Cold Email
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  7. Warmbox
Warmbox logo

Warmbox

Unclaimed

Warm up your cold email inbox to improve deliverability and avoid landing in spam.

Cold EmailEmail Deliverability
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TL;DR - Warmbox

  • Automatically warms up email inboxes to improve sender reputation.
  • Increases email deliverability for cold outreach campaigns, avoiding spam folders.
  • Uses AI-generated realistic interactions and a large private network for effective warm-up.
Pricing: Paid only
Best for: Enterprises & pros

Pricing Plans

Solo

$15/month

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

Start-up

$69/month

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

Growth

$139/month

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

Team

Contact us

  • Custom needs
  • Flexible plans
  • Any sending volumes

Solo

$19/month

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

Start-up

$79/month

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

Growth

$159/month

  • 6 inbox warm-up
  • 500 emails/day
  • 6 team members
  • Enterprise support
View full pricing

About Warmbox

Warmbox is an email warm-up tool designed to significantly improve email deliverability and sender reputation for cold email campaigns. It achieves this by automatically sending realistic emails from your connected inbox and interacting with them, mimicking human behavior. This process helps email providers recognize your domain as legitimate, preventing your emails from being flagged as spam. The tool is ideal for sales teams, marketing professionals, and agencies who rely on cold emailing for lead generation and sales. By ensuring emails reach the intended inbox rather than the spam folder, Warmbox helps users increase open rates, generate more leads, and ultimately close more deals. It supports integration with a wide range of email service providers, including Gmail, Outlook, Yahoo, Amazon SES, and any SMTP-compatible inbox. Warmbox offers advanced features like a private network of over 35,000 inboxes for interaction, AI-powered realistic email generation (GPT-4), customizable warm-up schedules, and detailed reporting to monitor deliverability. It also includes a free IP/Domain Blacklist & DNS deliverability checker to help users identify and fix potential issues with their email infrastructure.

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Warmbox FAQ

Warmbox is an email warm-up tool that automatically sends and interacts with emails from your inbox to improve your sender reputation and increase email deliverability, ensuring your cold emails land in the inbox instead of spam.

Warmbox offers several paid plans: Solo starts at $15/month (yearly billing) or $19/month (monthly billing) for 1 inbox and 50 emails/day. Start-up is $69/month (yearly) or $79/month (monthly) for 3 inboxes and 250 emails/day. Growth is $139/month (yearly) or $159/month (monthly) for 6 inboxes and 500 emails/day. Custom enterprise plans are also available.

No, Warmbox is not free. It offers various paid plans depending on the number of inboxes and email volume needed. However, it provides a free IP Blacklists & DNS settings Checker.

Warmbox is for anyone who sends cold email campaigns, including sales professionals, marketing managers, and agencies, who want to ensure their emails reach the recipient's inbox and avoid spam folders to generate more leads and sales.

Quick Info

Pricing
Paid
Visit Website

Alternatives

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Reply.io logo

Reply.io

Sales engagement and automation platform

Salesloft logo

Salesloft

Revenue orchestration platform

Sparkpost logo

Sparkpost

Email delivery and analytics

Mailjet logo

Mailjet

Email marketing and transactional email

Compare Warmbox

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