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Warmup Inbox vs. Sales.Rocks: Compared Feature-by-Feature

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    Email warming is a critical step in building a robust email marketing strategy, ensuring your messages land in your recipients’ inboxes and not their spam folders. In this guide, we compare Warmup Inbox and Sales.Rocks, two SaaS tools designed to improve your email deliverability and sender reputation.

    Warmup Inbox

    warmup inbox

    Warmup Inbox is a comprehensive tool aimed at businesses looking to improve their email deliverability. It supports a wide range of email providers and boasts a capacity for up to 30,000 warm-up emails per month. Its features include inbox placement tests, a spam words checker, and compatibility with all major email providers. Although it lacks blacklist monitoring, Warmup Inbox compensates with API access and excellent customer support via chat and email. A 7-day free trial is available, and the platform has received positive feedback on Trustpilot, G2, and Capterra.



    Sales.Rocks offers an email warmer service compatible with any email account that supports SMTP/IMAP connections, including G Suite, Outlook, and other major providers. While the platform emphasizes a quick and easy setup with a user-friendly interface, it does not specify its warm-up volume or offer explicit details on free tools related to the Email Warmer service. Similar to Warmup Inbox, Sales.Rocks lacks blacklist monitoring and does not provide clear information on API access. Customer support is available via email, but there is no free trial option. Feedback on the platform is varied, with high ratings on G2 and Capterra, but a lower rating on Trustpilot.

    Email Providers and SMTP Compatibility

    Both Warmup Inbox and Sales.Rocks are versatile in their compatibility with email providers, ensuring users can integrate the service with their existing email systems.

    Warm-Up Volume

    Warmup Inbox is transparent about its capacity, supporting up to 30,000 warm-up emails per month. Sales.Rocks, however, does not provide specific information regarding warm-up volume, which might be a consideration for users with extensive email marketing campaigns.

    Ease of Use

    Ease of setup and a user-friendly interface are common strengths of both tools, catering to users of varying technical expertise.

    Free Tools

    Warmup Inbox stands out by offering specific free tools like inbox placement tests and a spam words checker, which are directly beneficial for email deliverability. Sales.Rocks does not explicitly list free tools within its Email Warmer service.

    Blacklist monitoring

    Neither tool offers blacklist monitoring, a feature that could be crucial for maintaining a good sender reputation.

    API Access

    Warmup Inbox provides clear information about API access for integration into custom systems and workflows, while Sales.Rocks does not specify API access for its Email Warmer service.

    Customer Support

    Both services offer support via email, ensuring users can get assistance when needed.

    Free Trial and Feedback

    Warmup Inbox offers a 7-day free trial, giving potential users a chance to test its features. Sales.Rocks does not provide a free trial. Feedback across various platforms indicates a positive reception for Warmup Inbox, while Sales.Rocks has received mixed reviews, with discrepancies between different review sites.


    When choosing between Warmup Inbox and Sales.Rocks for your email warming and deliverability needs, it’s essential to consider the specific features and support each platform offers. Warmup Inbox provides a more comprehensive set of tools and transparent information about its services, making it a strong candidate for businesses serious about improving their email deliverability. On the other hand, Sales.Rocks might appeal to users looking for a straightforward solution compatible with major email providers but should be aware of the limitations regarding warm-up volume and the lack of a free trial.

    For users seeking an alternative that combines high volume, extensive features, and excellent support, Warmy.io emerges as an attractive option. With the capacity for 2,000 warm-up emails per day, a deep email deliverability test, and a range of free tools, Warmy.io stands out as a leading choice for enhancing your email marketing efforts and ensuring your messages reach their intended inbox.

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