Postini is a cloud-based email security and archiving solution offered by Google. It helps businesses to protect their email systems from spam, viruses, malware, and other online threats, while also providing easy access to archived emails. It was acquired by Google in 2007, and since then, has become an integral part of G Suite, the company’s suite of productivity tools for businesses.

Postini offers several features that help businesses to safeguard their email systems. These include email filtering, which blocks unwanted messages from reaching users’ inboxes, message encryption, which protects sensitive information from being intercepted or accessed by unauthorized parties, and anti-virus and anti-spam protection, which scans all incoming email traffic to detect and block any malicious content.

One of the key benefits of using Postini is its archiving capabilities. It captures every email that passes through the system and stores it in a secure, tamper-proof archive. This makes it easy for businesses to retrieve important messages, even if they were deleted from users’ inboxes. It also helps to ensure compliance with regulations such as the Sarbanes-Oxley Act, which requires companies to preserve all email communications for a set period.

Postini is easy to use and can be set up quickly. Once it is integrated with a business’s email system, it runs in the background, without the need for additional hardware or software. The system also provides detailed reports that allow administrators to monitor email traffic, identify potential threats, and take corrective action if necessary.

Despite its many benefits, some businesses may find Postini to be too expensive or too complex for their needs. In such cases, there are other email security and archiving solutions available in the market that may be more suitable.