Warmy Blog

Warmup Inbox vs. Warmbox: Compared Feature-by-Feature

Talk with a deliverability expert!

No need to flee, it’s totally free


    Email warming is a pivotal strategy for marketers and businesses aiming to ensure their emails consistently reach their intended inboxes. This process not only helps in building and maintaining a positive sender reputation but also significantly reduces the chances of landing in the spam folder. In this comparative analysis, we delve into two renowned SaaS solutions in the realm of email warm-up: Warmup Inbox and Warmbox. Each platform offers a set of features tailored to enhance your email’s deliverability, but the question remains: which one aligns perfectly with your requirements?

    Warmup Inbox

    warmup inbox

    Warmup Inbox is designed to increase your email deliverability by warming up your email address. It supports up to 30,000 warm-up emails per month and offers tools like an inbox placement test and a spam words checker. With API access and both chat and email support, it provides a comprehensive suite for managing your email reputation. Its 7-day free trial and positive feedback across Trustpilot, G2, and Capterra underscore its effectiveness and user satisfaction.



    Warmbox aims to boost your email sender score with a focus on compatibility across a wide range of email providers. It supports up to 15,000 warm-up emails per month and stands out with its free IPs/Domain Blacklist & DNS deliverability checker. Warmbox offers blacklist monitoring but lacks API access, which could be a consideration for more tech-savvy users. It provides chat and email support, ensuring assistance is readily available.

    Email Providers and SMTP Compatibility

    Warmup Inbox. Boasts universal compatibility with all major email providers, ensuring seamless integration regardless of the SMTP-supported inbox in use.

    Warmbox. Offers broad support for email providers, including Gmail, Outlook, and Yahoo Mail, facilitating a wide applicability across different email services.

    Warm-Up Volume

    Warmup Inbox. Allows for an impressive up to 30,000 warm-up emails per month, catering to users with heavy sending requirements.

    Warmbox. Provides a considerable capacity of up to 15,000 warm-up emails per month, suitable for moderate to high-volume senders.

    Ease of Use

    Warmup Inbox. Promises a straightforward setup and user-friendly interface, making it easy for users to start improving their email deliverability quickly.

    Warmbox. Highlights its quick 2-minute setup process and intuitive use, eliminating the need for technical expertise and simplifying the user experience.

    Free Tools

    Warmup Inbox. Enriches its offering with valuable tools like inbox placement tests and spam words checkers, aimed at optimizing email deliverability.

    Warmbox. Differentiates itself with a free IPs/Domain Blacklist & DNS deliverability checker, providing users with essential diagnostics to prevent deliverability pitfalls.

    Blacklist monitoring

    Warmup Inbox. While not explicitly mentioned, its comprehensive suite of tools indirectly supports monitoring efforts.

    Warmbox. Directly offers blacklist monitoring, enabling users to stay ahead of potential blacklisting issues that could impact deliverability.

    API Access

    Warmup Inbox. Yes, catering to developers and businesses seeking deeper integration and customization capabilities.

    Warmbox. No, which might limit its appeal to users with advanced technical needs or those seeking to automate their email warm-up processes tightly.

    Customer Support

    Both platforms demonstrate a strong commitment to customer support, offering chat and email channels to resolve queries and issues promptly.

    Free Trial and Feedback

    Warmup Inbox. A 7-day free trial coupled with high ratings across Trustpilot, G2, and Capterra reflects its effectiveness and customer satisfaction.

    Warmbox. While it doesn’t offer a free trial, the absence of reviews does not detract from its potential value to users seeking reliable email warming solutions.


    Choosing the right email warm-up tool depends on your specific needs, such as the volume of emails you plan to send, the need for API integration, and whether you require blacklist monitoring. Both Warmup Inbox and Warmbox offer solid features to improve your email deliverability.

    However, for those looking for the most comprehensive solution with the highest email warm-up volume, deep email deliverability tests, numerous free tools, and exceptional support, Warmy.io stands out as the superior choice. With the capacity to warm up to 2,000 emails per day, Warmy.io ensures your email marketing campaigns achieve maximum deliverability and engagement.

    Embrace the power of Warmy.io and ensure your emails always hit the inbox, not the spam folder.

    Scroll to Top