Onet Poczta is a free email service designed to make everyday communication convenient and accessible across devices. Users can access their mailbox from a computer, tablet, or phone, and can use mobile apps for Android and iOS. The service offers smart folders to sort messages automatically or organize them manually, while aliases allow several email addresses to be managed in one inbox. New-message notifications, including browser notifications, help users keep up with incoming mail.

Onet Poczta highlights security features such as two-step verification and advanced spam filters. It also supports online payments, allowing users to pay bills directly from their mailbox. The interface is designed for straightforward navigation, with a choice of logins and domains. Help resources cover getting started, mailbox management, account security, password recovery, and email setup in programs and on mobile devices. Configuration guidance includes IMAP and SMTP settings. Users can contact the service by email; the listed support hours are Monday to Friday, from 8:00 to 21:00.