MailTrack primarily supports Gmail, functioning as a browser extension that enhances the Gmail interface by providing real-time email tracking. Additionally, users who utilize Google Workspace accounts can also benefit from MailTrack's features. While MailTrack does not directly integrate with other email clients such as Outlook or Apple Mail, users can still access MailTrack by leveraging the Gmail interface through these clients if they have Gmail accounts set up. This means that as long as an email is sent through Gmail, MailTrack can provide tracking capabilities, regardless of the platform used to initiate the email. For optimal performance and the full range of features, users are encouraged to use Gmail directly. Anyone interested in the latest compatibility information or any potential updates can refer to the current MailTrack website, which may provide further details on available features and integrations.