Most senders have discovered data sources such as blacklists, sender reputation, and inbox monitoring. But many are not aware how much information is hidden in their internal Postfix transaction data (maillog). Transient SMTP errors show reputation issues long before IPs are blocked.

By installing a small agent on your Postfix server, you will have in depth delivery visibility in seconds and you will have deliverability insights via an online dynamic dashboard to view reports. You will also receive alerts by email in case of issues. In addition, Postmastery's team of deliverability experts is available to provide support where needed.

Email addresses are pseudonymised or anonymised so your data remains secure. It also reads data from Microsoft SNDS, Return Path Sender Score, Google Postmaster Tools (GPT) and relevant blacklists. There's no need any more to manually check a collection of deliverability tools.