There are many alternatives to Postbox for Mac and since it's discontinued a lot of people are looking for a replacement. The best paid Mac alternative is Microsoft Outlook. If that doesn't suit you, our users have ranked more than 50 alternatives to Postbox and ten of them are paid and available for Mac so hopefully you can find a suitable replacement. Other interesting paid Mac alternatives to Postbox are Airmail, Mimestream, MailMate and Superhuman Mail.
Streamline emails, calendars, contacts, and task management with a smart inbox prioritizing critical messages. Includes calendar scheduling, third-party app integration like Facebook, Dropbox, and Trello, and support for Microsoft Exchange, Outlook.com, and Gmail, ensuring efficient task and email handling.
Engineered for iOS, macOS, and watchOS, this fast mail client supports multiple account types, custom actions, Smart Inbox filtering, unified inbox, privacy mode, email scheduling, snooze, third-party app integration, flexible personalization, and advanced workflow tools.
Mimestream combines your favorite Gmail features with the power of a native macOS app so you can move through your email effortlessly.
Mac IMAP email client featuring keyboard control, Markdown email composition, advanced search capabilities, smart mailboxes, automatic signature handling, cryptographic options with OpenPGP/S-MIME, tagging, multiple notifications, and customizable layouts including widescreen.
Productivity-centered email application streamlines inbox management, uses AI for drafting responses, automates snippets, summarizes conversations, enables timely sends, integrates calendar and CRM, and includes collaborative features like live views and comments.
The most powerful platform for email productivity in a beautiful native app — on desktop and mobile.
Dedicated Gmail client with clean integration of Google Calendar, Contacts, Google Drive, and Google Docs, Sheets, and Slides.
Unibox is a people centric email client that organizes your messages by person. It avoids having email like a to-do list.
GyazMail is a email client software for Mac OS X, based on Cocoa framework, simple, easy-to-use with many features.
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