Postbox icon

Postbox

Postbox is an email client for Windows and macOS that provides a clean, easy-to-use interface for managing multiple email accounts. It supports POP3, IMAP, Exchange, Gmail, Outlook.com, Yahoo and more.

What is Postbox?

Postbox is an email client application developed by Postbox Inc. It is available for Windows and macOS platforms. Postbox provides a fast, customizable interface for managing multiple email accounts from providers like Gmail, Outlook, Exchange, iCloud, Yahoo, and more.

Some key features of Postbox include:

  • Unified inbox to view all emails from different accounts in one place
  • Customizable interface with support for themes and add-ons
  • Inbuilt calendar and contacts manager
  • Email encryption and digital signatures
  • Collaboration tools for sharing calendars, contacts etc.
  • Offline access to enable reading and writing emails without an internet connection
  • Quick message search and filtering
  • Email scheduling and reminders
  • Integration with cloud storage services like Dropbox and Google Drive

Postbox is known for its clean interface and ease of use. It is a good alternative email client for both personal and business use for those seeking an Ad-free email experience with premium features. The software is available via annual subscriptions with support provided by the Postbox development team.

The Best Postbox Alternatives

Top Apps like Postbox

Thunderbird, Microsoft Office Outlook, Spark Mail, Mailbird, Apple Mail, Evolution, Mailspring, eM Client, EssentialPIM, Mutt, Geary, Mimestream, Juicy Mail, Microsoft Mail and Calendar, Trojitá, Kiwi for Gmail, Superhuman, Microsoft Outlook Express, WunderMail, ProfiMail, nPOPuk, Nylas Mail Lives, Unibox, Canary Mail, Inbox by Gmail, Nextcloud Mail, Mail Backup X, Calypso, Sylpheed, Zimbra Desktop, Mia for Gmail, SlideMail, Simple Mail, aerc, Claws Mail, Mailplane, Pantheon Mail, June.ai, Becky! Internet Mail, DreamMail, Ymail2, Clyton, Mynigma, FossaMail, GyazMail, MailTab for Gmail, Bluemail for mac, LeaderSend, Mailsmith, Spicebird, Mulberry, Mail Pilot, Mailburn, Smampi, MetroMail, MailBar are some alternatives to Postbox.

Thunderbird

Mozilla Thunderbird is a feature-rich and open-source email client that serves as a personal information manager. Developed by the Mozilla Foundation, the same organization behind the Firefox web browser, Thunderbird is designed to provide a user-friendly and customizable experience for managing email, contacts, calendars, and more. Key Features: Email Management...

Microsoft Office Outlook

Microsoft Outlook is a personal information manager software application developed by Microsoft. It is part of the Microsoft Office suite of productivity applications.Outlook offers email, calendar, contacts, tasks, and notes management features. It supports exchanging email, calendar appointments, contacts, tasks, and notes with Microsoft Exchange Server or other services...

Spark Mail

Spark Mail is an innovative and feature-rich email client developed by Readdle, known for its focus on productivity and collaboration. Available on various platforms, including iOS, macOS, Android, and Windows, Spark aims to provide users with an efficient and user-friendly email experience. Key Features: Smart Inbox: Spark's Smart Inbox...

Mailbird

Mailbird is a feature-rich email client application for Windows operating systems. Originally launched in 2012, Mailbird aims to provide a fast, easy-to-use, and customizable email experience for power users.Key features of Mailbird include:A clean, intuitive, and ad-free user interface optimized for productivitySupport for all major email services and protocols...

Apple Mail

Apple Mail, commonly known as Mail, is the default email client pre-installed on Apple devices running macOS and iOS. As a core application within the Apple ecosystem, Mail provides users with a straightforward and integrated email experience, aligning with Apple's emphasis on user-friendly design. Key Features: User-Friendly Interface: Apple...

Evolution

Evolution is a free and open-source email client for Linux and Unix-like operating systems. Originally developed by Ximian, Evolution has been the default email client in GNOME desktop since version 2. It is designed to be easy-to-use while still offering advanced email management features out of the box.Some key features...

Mailspring

Mailspring is an open-source email client application developed by Foundry 376. It is available for Windows, Mac, and Linux operating systems.Mailspring provides a modern, intuitive user interface and aims to improve email productivity by organizing conversations, connecting with third-party apps, and providing advanced features like snooze, send later, templates, and...

EM Client

eM Client is an email application designed for the Windows operating system that focuses on being user-friendly while still offering advanced features. It supports connecting to common email protocols like POP3, IMAP and Exchange ActiveSync allowing you to access emails from services like Gmail, Outlook, Yahoo and more.Some key...

EssentialPIM

EssentialPIM is a full-featured personal information manager (PIM) software for Windows designed to help you organize all aspects of your life in one convenient application. With EssentialPIM, you can manage your contacts, calendars, tasks, notes, passwords, and more from a single dashboard-style interface.Key features of EssentialPIM include:Contact Management...

Mutt

Mutt is a highly configurable, keyboard-driven email client for Linux, Unix, and macOS operating systems. Originally released in 1996, Mutt emphasizes speed, flexibility, and security for advanced email users.As an open source program, Mutt is completely free to download and use. It supports standard email protocols like IMAP, POP3, and...

Geary

Geary is an open-source email application designed specifically for the GNOME desktop environment on Linux. It features a minimal yet intuitive interface that aims to provide a fast and distraction-free email experience.Some key features of Geary include:Supports common email protocols like IMAP, POP3, and SMTPQuick search and filtering...

Mimestream

Mimestream is a multi-platform email management application that allows users to connect all their email accounts into one easy-to-use interface. It works across Windows, Mac, iOS, Android and web.Some key features of Mimestream include:Unified inbox - See messages from all your accounts in one place and easily switch...

Juicy Mail

Juicy Mail is an easy-to-use, open-source email application for Windows. It is designed to provide a user-friendly interface and powerful customization options to enhance the email experience.Some key features of Juicy Mail include:Support for multiple email accounts from various providers such as Gmail, Outlook, Yahoo Mail, iCloud, etc...

Microsoft Mail and Calendar

Microsoft Mail and Calendar is a free email and calendar application and web service developed and offered by Microsoft. It comes pre-installed with Windows 10 and later Windows operating systems and deeply integrates with other Microsoft products and services.The email component provides a full-featured webmail interface accessible from any web...

Trojitá

Trojitá is an open-source email client for Linux designed with security, power users and developers in mind. Some key features include:Fast and lightweight - Trojitá uses the Qt framework and has a small memory footprint compared to other desktop email clients.Strong encryption support - It supports encryption protocols...

Kiwi for Gmail

Kiwi for Gmail is a feature-rich Chrome extension that augments the standard Gmail experience with productivity-focused features. It allows users to easily schedule emails to be sent at a specific date and time in the future, snooze emails so they reappear in the inbox later, send follow-up reminders for emails...

Superhuman

Superhuman is a fast and efficient email application designed to help busy professionals get through their inbox quickly. It is only compatible with Gmail accounts as of 2023.Some key features of Superhuman include:AI-based automation that allows you to complete common actions with one-tap keyboard shortcutsInstantaneous search across all your...

Microsoft Outlook Express

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WunderMail

WunderMail is a user-friendly email application designed to help keep your inbox organized and make communicating efficient. It has a clean, intuitive interface that allows you to easily group emails into customizable tabs and folders based on projects, contacts, and priorities. Some key features of WunderMail include:Smart inbox that...

ProfiMail

ProfiMail is a feature-rich email client and personal information manager software for Windows. It helps users organize and manage all their electronic communications and schedule in one place.With ProfiMail, you can connect unlimited email accounts of the most popular email providers like Gmail, Outlook, Yahoo Mail, iCloud and more...

NPOPuk

nPOPuk is an open-source desktop email client for Windows that emphasizes privacy, security, and control. It supports connecting to POP3 and IMAP email accounts from various providers.As an email client, nPOPuk has all the basic features you would expect - reading, writing, and organizing emails; contact management; calendar and...

Nylas Mail Lives

Nylas Mail Lives is an open-source desktop email client built with React and Flux. It is designed to be fast, extensible, and customizable through an open plugin architecture. Some key features of Nylas Mail Lives include:Integration with popular calendars like Google Calendar, Exchange, and iCloud to show schedules alongside...

Unibox

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Canary Mail

Canary Mail is a feature-rich email client application available for Mac, iOS, and Android platforms. Originally launched in 2015, it has quickly become a popular alternative to default mail apps thanks to its modern design and wide range of productivity tools.At its core, Canary aims to transform the often-frustrating experience...

Inbox by Gmail

Inbox by Gmail is an email application created and developed by Google. It connects to your Gmail account and uses machine learning to organize and prioritize your emails automatically.Some key features of Inbox by Gmail include:Bundles - Automatically groups similar emails into bundles like Finance, Purchases, Trips etc...

Nextcloud Mail

Nextcloud Mail is an open source email and productivity suite that integrates tightly with the Nextcloud content collaboration platform. It provides users with feature-rich email along with calendar and contacts management. Some key features of Nextcloud Mail include:Easy setup and integration - Nextcloud Mail integrates out-of-the-box with Nextcloud servers...

Mail Backup X

Mail Backup X is a user-friendly software solution designed specifically for backing up email data from a variety of popular email services and providers. With an intuitive interface and step-by-step wizards, Mail Backup X makes it easy to schedule automatic or manual backups of email messages, contacts, calendars, tasks, and...

Calypso

Calypso is an open source software suite for business analytics and planning. It provides a platform for gathering, consolidating, modeling, analyzing and reporting on data across the enterprise to drive better business decisions.Some key features and capabilities of Calypso include:Data integration and ETL to bring together data from...

Sylpheed

Sylpheed is a free, open source email client application used to access and manage email. It supports protocols like IMAP, POP3, and SMTP so users can send and receive email from services like Gmail, Outlook, Yahoo Mail, and more.Some key features of Sylpheed include:Lightweight and fast interfaceSupport for...

Zimbra Desktop

Zimbra Desktop is an free, open source desktop email and calendar client application developed by Synacor that connects to Zimbra Collaboration servers. It allows users to access their email, contacts, calendar, tasks, and notes from multiple accounts through a single easy-to-use interface.Some of the key features of Zimbra Desktop...

Mia for Gmail

Mia for Gmail is an email management assistant that integrates directly with Gmail to help users keep their inbox under control. It utilizes artificial intelligence to automatically sort incoming emails into categories like Finance, Travel, Social, and more based on their content. This makes it easier to find important emails...

SlideMail

SlideMail is an email application designed to improve productivity, organization, and communication. It uses a unique slide-based interface that allows users to structure their emails and tasks visually.Key features of SlideMail include:Slide-based email composer to segment ideas, tasks, content - makes emails more scannable and actionableVisual task management...

Simple Mail

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Aerc

aerc is an open-source, terminal-based email client written in Rust. It is designed to be efficient, easy to use, and fast compared to other terminal mail clients like mutt or alpine.Some key features and characteristics of aerc include:An intuitive and clean interface for composing, reading, organizing, and searching...

Claws Mail

Claws Mail is a free, open source email client and news client for Linux and other Unix-like operating systems. It is designed to be lightweight, fast, and easy to use while still being highly customizable and supporting advanced features.Some key features of Claws Mail include:Support for POP3, IMAP...

Mailplane

Mailplane is an email application designed specifically for Mac operating systems. It provides an alternative to Apple's default Mail program with the goal of improving the email experience for Mac users.Some key features of Mailplane include:Support for multiple email accounts - Gmail, Outlook, iCloud, Exchange, IMAP, and POP...

Pantheon Mail

Pantheon Mail is an open-source, privacy-focused email service launched in 2019. It is designed to provide maximum email privacy and security to its users.Some key features of Pantheon Mail include:End-to-end encryption of emails to prevent unauthorized access.Zero-knowledge architecture that prevents even Pantheon employees from accessing user emails.Anonymous...

June.ai

June.ai is an artificial intelligence-powered virtual assistant designed specifically for meetings. It helps teams run more productive meetings by automatically generating notes, action items, summaries, and memos from meeting recordings and notes.Some key features of June.ai include:Real-time transcription and note-taking during meetingsAutomated summaries highlighting key discussion...

Becky! Internet Mail

Becky! Internet Mail is an easy-to-use email program for Windows that allows you to manage all your personal and work email accounts in one convenient application. It supports connecting to POP3, IMAP, and Microsoft Exchange servers so you can access emails from a variety of providers and services.Some key...

DreamMail

DreamMail is an innovative email service that focuses strongly on user experience, privacy and organization. It comes with a clean, responsive interface that allows for deep customization with themes, layouts, colors and more to suit personal preference.One of the highlights of DreamMail is its unique contacts management system. It...

Ymail2

Ymail2 is a free, open source email client for Linux operating systems. Developed as a lightweight alternative to more complex programs like Mozilla Thunderbird or Evolution, Ymail2 provides a simple yet powerful email experience.Despite its simplicity, Ymail2 packs in many useful features for managing email. It fully supports both...

Clyton

Clyton is an open-source, self-hosted alternative to Notion that allows users to create wikis, notes, to-do lists, calendars, and more to organize and share information. Developed using Laravel and Vue.js, it has a clean and intuitive interface that will feel familiar to Notion users.Some key features of Clyton...

Mynigma

Mynigma is an open source email client designed for enhanced privacy and security. Unlike traditional email services, Mynigma allows users to encrypt emails from end-to-end using state-of-the-art cryptography. This prevents third parties, including the Mynigma service itself, from accessing the contents of users' communications.In addition to encryption, Mynigma enables...

FossaMail

FossaMail is an open-source, self-hosted email server software designed to give users more control, security, and privacy over their email communications. Unlike traditional email services like Gmail or Outlook, FossaMail allows you to host your own email server on your own hardware or virtual private server (VPS).Some key features...

GyazMail

GyazMail is an open-source email server and webmail client that allows you to host your own private and secure email service. It is designed to be easy to install and maintain while still providing enterprise-level email functionality.Some key features of GyazMail include:Secure IMAP/POP3/SMTP protocols for sending...

MailTab for Gmail

MailTab for Gmail is a free and useful browser extension that aims to improve the email experience for Gmail users. It works by adding tabs to Gmail, allowing you to open each email or conversation in its own tab. This makes it easier to multitask and quickly switch between different...

Bluemail for mac

Bluemail is an email app designed specifically for Mac that prioritizes privacy, security, and convenience. It has an intuitive, ad-free interface that looks great on a Mac desktop or laptop. Some key features of Bluemail include:Supports unlimited email accounts from providers like iCloud, Gmail, Outlook, Yahoo, and moreEncrypted email...

LeaderSend

LeaderSend is an easy-to-use email marketing and automation software suitable for small businesses and entrepreneurs. It comes with a drag-and-drop email builder to create professional-looking email campaigns, newsletters, and notifications. Users can build targeted contact lists by importing CSV files or integrating with other apps.The software enables designing automated...

Mailsmith

Mailsmith is an intuitive email marketing platform designed to help small businesses, entrepreneurs, bloggers, and creators grow their following, drive repeat business, and increase sales through email newsletters and campaigns. Its easy-to-use drag-and-drop editor makes creating on-brand, professional emails effortless, even for those without design experience.Key features of Mailsmith...

Spicebird

Spicebird is a free, open source email and calendar suite for Windows, Linux, and Mac that offers core email, contacts, and calendaring features. It supports connecting to existing email accounts from providers like Gmail and Yahoo Mail so users can access all their email from one convenient application.Key features...

Mulberry

Mulberry is an easy-to-use, open-source email client for Windows, Linux and macOS operating systems. It supports connecting to POP and IMAP email accounts from various providers such as Gmail, Outlook, Yahoo Mail etc. Some of the key features of Mulberry include:Intuitive and customizable user interface with various view options...

Mail Pilot

Mail Pilot is an email organizer app developed specifically for Mac users to help them better manage their inboxes. It comes with a variety of useful features not found in most regular email clients.One of the standout features is the ability to set up customized swipe gestures to archive...

Mailburn

Mailburn is an email client software designed to help users organize, manage, and work with their email more efficiently. Unlike traditional email clients, Mailburn goes beyond just sending and receiving emails by providing a suite of productivity features.Key features of Mailburn include:Unified inbox to easily manage multiple email...

Smampi

Smampi is an open-source, self-hosted alternative to messaging platforms like Slack or Microsoft Teams. It allows organizations to set up their own internal messaging system with features like:Public and private group chatsDirect messaging between employeesFile and image sharingSearch through historical conversationsUser management and access controlsBots and integrations with other...

MetroMail

MetroMail is a Windows email client designed to provide a fast, easy-to-use email experience. It features a clean, minimalist interface that does away with clutter and focuses on email essentials.With MetroMail, users can conveniently manage multiple email accounts from Outlook.com, Exchange, Gmail, Yahoo and more in one place...

MailBar

MailBar is an email management software solution designed for individual and business users who receive a high volume of emails daily. It goes beyond a standard email client with features to help users organize, prioritize, schedule, and track emails more efficiently.Key features of MailBar include:Customizable interface with support...