The app supports all the mainstay Gmail features like inbox categories, email labeling, filters, Google profile photos, Calendar integration (with in-line responses to invitations), undo Send, and the ability to send mail from any Gmail aliases you have configured. At present, only Google email addresses are supported, but in time the app plans to add support for Microsoft 365 and Outlook, IMAP, and JMAP email accounts. It uses the Gmail API to provide a highly responsive Gmail experience, and it's uniquely designed to work best with Gmail. Mimestream might just be the best 'native' Gmail application experience you can have on your Mac.
