Postbox is not available for iPhone but there are plenty of alternatives with similar functionality. The best iPhone alternative is Microsoft Outlook. It's not free, so if you're looking for a free alternative, you could try Apple Mail or Spark Mail. If that doesn't suit you, our users have ranked more than 50 alternatives to Postbox and 13 are available for iPhone so hopefully you can find a suitable replacement. Other interesting iPhone alternatives to Postbox are EssentialPIM, Canary Mail, Spike and Airmail.
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.
Access, view and manage messages from all your email accounts in one place. Categorize your messages into easy to browse categories. Catch up on email easily with Apple Intelligence powered Priority Messages and summarizations.
E-mail app with all the great features: swipes (long/short), snooze, add (multiple) attachments from the cloud, support for various e-mail services and more.
The powerful, full-featured Personal Information Manager for Windows offering Email, Synchronization, Portability, Network support, Android and iOS versions.
Canary can write your emails, prioritize what needs attention, silence spam & much more. Say hello to your Inbox Copilot!
Transform your email inbox into a collaborative workspace with Spike. Enjoy integrated chat-like emails, tasks, collaborative notes, and group projects. Seamlessly manage multiple accounts, organize priorities, and schedule meetings across devices.
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.
TypeApp is an all-free, beautifully designed, universal email app, capable of managing unlimited number of mail accounts from various providers, allowing for smart push notifications while enabling personalization across multiple email accounts.
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.
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Postbox has dozens (hundreds?) more features than Apple Mail, not the least of which is keyboard navigation, keyboard filing, option for multiple identities within each account, the ability to choose which mailbox is your Sent mail, and a lot more.