FEX.PLUS is an online temporary email service that lets users create disposable addresses for receiving messages without using their primary inbox. The service can generate a random login and email domain in a few clicks, or provide a secret address that can also receive mail. Available domains include mailto.plus, fexpost.com, fexbox.org, mailbox.in.ua, and chitthi.in.

Users can protect an inbox with a PIN code and choose how long an address remains active, with destruction options ranging from one hour to seven days. The site also offers inbox links, address copying, QR-code downloads, and a choice of interface languages. FEX.PLUS describes its service as designed for anonymity, stating that it does not collect personal data or share tracked actions with third parties. It also features a spam filter and says it does not display ads.

Because addresses are temporary and automatically deleted, FEX.PLUS notes they are unsuitable for social media accounts that users may need to recover later. The service provides a Help Center, Terms of Service, and Cookies Policy.