Warmbox Review

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Warmbox Review

Warmbox is a tool designed to enhance your email deliverability by warming up your inbox. It works by improving your inbox reputation, ensuring that your emails reach the inboxes of your leads instead of landing in their spam folders.

Warmbox is trusted by over 2,000 companies and can be used with any email service provider. It is particularly beneficial for those running cold email campaigns for sales or marketing, as it reduces the risk to your sender reputation and deliverability.

The platform operates by automatically sending emails from your inbox and interacting with them as a real lead would. This includes actions such as removing emails from the spam folder, opening and bookmarking emails, and replying to some emails. These interactions help to increase your email deliverability and enhance your sender reputation.

Warmbox offers a network of over 35,000 private inboxes, composed of a mix of the most important email service providers, to help increase your email deliverability and enhance your email reputation.

The platform also provides detailed analytics and reports, allowing you to monitor your inbox reputation and the success of your email campaigns. With Warmbox, you can expect to see an improvement in your email deliverability within a few days, ensuring that your cold emails reach your target inboxes and do not end up in spam.

Warmbox Features

Warmbox offers a range of features designed to improve your email deliverability and enhance your sender reputation:

  1. Easy Inbox Connection: Warmbox allows you to connect your inbox from any email provider (Gmail, Outlook 365, Yahoo Mail, Amazon SES, SMTP, etc.) in a matter of seconds. No technical skills are required, making the setup process fast and easy.
  2. Automated Interactions: Warmbox sends realistic emails from your inbox daily and interacts with them as a real lead would. This includes removing emails from the spam folder, opening and bookmarking emails, and replying to some emails. These interactions help to increase your email deliverability and enhance your sender reputation.
  3. Private Inbox Network: Warmbox has a network of over 35,000 private inboxes from over 100 countries. These inboxes, aged from 2 weeks to 15 years, start natural conversations with your inbox and thousands of others from different email service providers.
  4. Flexible Warm-up Recipes: Warmbox offers four warm-up recipes, with smart rules and settings automatically recommended for you. Alternatively, you can use advanced options to customize the warm-up timing range, the number of emails sent per day, the reply rate, and other parameters.
  5. Natural & Realistic Email Templates: Warmbox uses millions of email templates that look real to create natural and human conversations with your inbox and their private network. This helps to maximize your email reputation.
  6. Optimized Warm-up Options: Warmbox offers the best warm-up options to increase your inbox sender reputation in the most efficient and realistic way. This includes warming up your inbox during your working hours, on your timezone, etc.
  7. Free IP/Domain Blacklist & DNS Deliverability Checker: Warmbox allows you to audit your IP and domain blacklist status based on over 120 checkpoints. You can inspect your domain settings (SPF, DKIM, & DMARC) to verify if your emails are authenticated and protected from spoofing and malicious activities.
  8. Add Inboxes, Team Members, Workspaces: Warmbox is fully flexible, allowing you to add new inboxes, team members, or even dedicated workspaces for brands directly on your dashboard.
  9. Detailed Reports: With Warmbox, you can monitor your email deliverability results with detailed reports. You can track the number of emails sent, the reply rate, your spam score, and your warm-up schedule.
  10. Support for Multiple Email Providers: Warmbox supports a wide range of email providers, including Gmail, Outlook, Yahoo, iCloud, AOL, Yandex, Zoho, Sendgrid, Sendinblue, Mailgun, Amazon SES, and any other provider that supports SMTP.
  11. Multi-Account for Agencies: Warmbox allows agencies to manage multiple accounts, making it a suitable solution for managing large-scale email campaigns.
  12. Team Members: You can add team members to your Warmbox account, allowing for collaborative management of your email campaigns.
  13. In-app Onboarding: Warmbox provides in-app onboarding to help new users get started with the platform.
  14. Live Chat Support: Warmbox offers live chat support to assist users with any issues or queries they may have.
  15. Secured Payment: Warmbox ensures secure payment processing for its users.

Warmbox Pricing

Warmbox offers a range of pricing plans to cater to different user needs:

  1. Solo Plan ($15/month): This plan is designed for individual users. It includes warm-up for 1 inbox, up to 50 emails per day, and premium support.
  2. Start-up Plan ($69/month): This plan is suitable for small businesses. It includes warm-up for 3 inboxes, up to 250 emails per day, support for 3 team members, and premium support.
  3. Growth Plan ($139/month): This plan is designed for growing businesses. It includes warm-up for 6 inboxes, up to 500 emails per day, support for 6 team members, and enterprise support.
  4. Team Plan (Custom Pricing): For businesses with custom needs and larger sending volumes, Warmbox offers flexible plans. You can contact them directly for pricing details.

All plans include a range of features such as automated interactions, auto-removal from spam, auto-reply to emails, marking emails as favorite, spam score monitoring, realistic emails (GPT-3), growth, flat or random warm-up, fully custom warm-up, warm-up schedule, live email checker (DNS, blacklist), private inboxes network, reporting & dashboard, and support for various inboxes (Gmail, Gsuite, Outlook, Microsoft 365, Yahoo, iCloud, AOL, Verizon, Yandex, Zoho, Sendgrid, Sendinblue, Mailgun, Amazon SES, and any other Inbox via SMTP).

They also offer multi-account for agencies, team members, in-app onboarding, third-party app password, detailed help center, live chat support, product updates, blog resources, affiliate program, and secured payment.

Please note that you can choose to be billed yearly or monthly. The prices listed above are for monthly billing.

Warmbox Review

Warmbox has received a variety of reviews from its users, highlighting both its strengths and areas for improvement. Here’s a summary:


  1. Effective Spam Prevention: Many users have reported that Warmbox has helped them significantly reduce the number of their emails landing in spam folders. This has allowed them to reach more prospects and improve their email campaigns’ effectiveness.
  2. Easy Setup: Users have praised the ease of setting up Warmbox, particularly with Gmail. The support team has also been commended for assisting users throughout the setup process.
  3. Improved Email Deliverability: After a month of warming up and a few edits on their SPF and DKIM, some users have reported better-than-expected results in terms of email deliverability.
  4. Great Support: The support team has been praised for their assistance and responsiveness.
  5. Useful Features: Users have appreciated the additional features that Warmbox offers, such as the DNS checker.


  1. Inconsistent Results: Some users have reported that despite Warmbox indicating a 0% spam rate, their emails still ended up in the spam folder when tested with other tools. This led to ineffective email campaigns.
  2. Limited Email Service Providers: Despite claims of using all major email service providers for warming up mailboxes, some users have reported that Warmbox primarily uses Gmail. This has raised concerns about the effectiveness of the warm-up process for other email service providers.
  3. Delayed Support Response: Some users have reported delayed responses from the support team, leading to dissatisfaction with the service.
  4. Potential for Email Blocking: A few users have reported that their emails started getting blocked by Google after using Warmbox for a couple of months. They also mentioned a lack of response from customer support regarding this issue.

Please note that these are user reviews and experiences may vary. It’s always recommended to do your own research and consider your specific needs when choosing a service.

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