Spamhaus

Spamhaus provides critical IP and domain reputation intelligence, which is essential for newsletter operators. This intelligence helps you understand the trustworthiness of your email sending infrastructure and ensures your messages reach subscriber inboxes.

The platform maintains blocklists that email providers widely use to filter out spam. Newsletter creators can use Spamhaus's free tools to check if their sending IP address or domain name is listed, directly impacting email deliverability.

Maintaining a clean sender reputation is vital for successful email marketing. Spamhaus helps you identify potential issues that could lead to emails being blocked, allowing you to take corrective action and improve your email deliverability rates.

If you experience problems sending emails, Spamhaus offers tools to diagnose deliverability issues by verifying if your IP or domain is flagged. This proactive approach helps ensure your newsletters consistently land in the inbox, no