10 beste E-Mail-Apps im Test 2026

Mailbird is an email client tailored for Windows users, providing an all-in-one platform for managing multiple email accounts. It boosts productivity by offering features that simplify email management and communication.

Why I picked Mailbird: Mailbird is designed specifically for Windows, making it a great choice if your team already uses this operating system. The app's unified inbox lets you manage multiple accounts efficiently, while the speed reader feature helps you process emails quickly. The app's customization options also let you personalize your email experience to fit your needs.

Standout Features and Integrations:

Features include a snooze function to temporarily hide emails and keyboard shortcuts that make navigation quicker and easier. You can also customize the layout to fit your workflow.

Integrations include Slack, Google Calendar, Asana, Dropbox, Evernote, Trello, Facebook, Twitter, WeChat, ZeroBounce, and more.

Google Gmail is a widely used email service that caters mainly to Google Workspace users. It offers essential email functions that integrate with Google services, giving both individuals and businesses a connected experience.

Why I picked Google Gmail: Google Gmail is ideal for Google Workspace users because it integrates with Google Drive, Calendar, and Docs. The conversation view groups your emails into threads so you never lose track of the discussion, while labels and filters help you categorize and sort emails efficiently. The Google Gmail app's spam filtering helps keep your inbox clean and protects you from phishing scams.

Standout Features and Integrations:

Features include 15GB of free storage, smart reply suggestions, and advanced search capabilities. You can schedule emails to be sent later, which is handy for coordinating with teams across time zones. The priority inbox also automatically highlights important emails so you never miss critical messages.

Integrations include Google Workspace and more.

Apple iCloud Mail is an Apple-native email app that offers integration across iPhones, iPads, and Macs. It helps users stay organized and efficient with a suite of essential email management tools.

Why I picked Apple iCloud Mail: Apple iCloud Mail is tailored for Apple users, delivering consistent performance across all your Apple devices. The app's iCloud integration lets you quickly sync emails, contacts, and calendars, while the Handoff feature lets you switch between devices without losing your place. Also, the app's user-friendly interface makes managing emails straightforward.

Standout Features and Integrations:

Features include a priority inbox for important emails, customizable swipe gestures, and support for rich text formatting. You can manage multiple email accounts in one place, and the VIP feature also lets you set notifications for emails from important contacts so you never miss high-priority messages.

Integrations are not publicly listed.

mail.com is an email service catering to business owners who need customizable domain options. It lets users create professional-looking email addresses with tailored domain names.

Why I picked mail.com: mail.com's standout feature is free domain options, which let you personalize your email address with a custom domain name. This flexibility is ideal for both individuals and small businesses looking to upgrade their email presence. The tool's simple interface makes managing emails straightforward. The ability to use different domain names sets mail.com apart from other email apps.

Standout Features and Integrations:

Features include unlimited email storage and a customizable spam filter. You can also use the integrated online calendar to manage your schedule efficiently.

Integrations include Opera, Google Chrome, Safari, Mozilla Firefox, Mail Backup X, Mailspring, and more.

Yahoo! Mail is an email service that offers users ample storage for their emails and attachments. Its high-capacity email inbox makes it ideal for both personal and business communication.

Why I picked Yahoo! Mail: Yahoo! Mail's expansive storage capacity is a key feature for users who manage a large volume of emails. You can store thousands of emails without worrying about running out of space. The intuitive interface lets you manage emails efficiently, and thanks to its customizable themes, you can personalize your email experience.

Standout Features and Integrations:

Features include an easy-to-use search function and a built-in calendar that lets you organize your schedule directly from your inbox. You can also customize the interface with unique themes to suit your preferences.

Integrations include Google Drive, Microsoft Office Online, Grammarly, Shift, WiseStamp, CredentialingSpectrum, Reoon Email Verifier, Rambox, Oki-Toki, and more.

Edison Mail is designed for users who value smart features and efficient email management. It increases productivity by automating routine tasks and providing intelligent insights.

Why I picked Edison Mail: Edison Mail's AI-powered features help you manage emails more efficiently. The app includes smart notifications that alert you to important emails, and the one-tap unsubscribe feature is a lifesaver for decluttering your inbox. The built-in assistant also organizes your travel and package information, keeping everything in one place.

Standout Features and Integrations:

Features include a focused inbox that prioritizes emails based on importance and customizable swipe gestures to speed up email management. You can also use dark mode to reduce eye strain during late-night work sessions.

Integrations include Google Workspace, Apple iCloud, Yahoo! Mail, AOL, Hotmail, Amazon, Walmart, Microsoft 365, and more.

Thunderbird is an open-source email client that lets users customize and control their email environment. Its features make email management and communication more efficient.

Why I picked Thunderbird: Thunderbird is highly customizable, appealing to users who want to tailor it to their specific needs. You can use add-ons to upgrade the app's functionality, while the tabbed email feature lets you manage multiple conversations at once. Because the app is open-source, you can modify it to suit your preferences.

Standout Features and Integrations:

Features include a smart folder system to organize emails across different accounts, powerful spam filtering to block unwanted emails, and a quick filter toolbar to find emails more efficiently.

Integrations include Google Gmail, Yahoo! Mail, McAfee LiveSafe, Kasm Workspaces, Greatmail, PDFCreator, Mailfence, Aid4Mail, 1Tool CRM, and more.

Canary Mail is an email client designed for individuals and teams who prioritize privacy and security in their communications. Its end-to-end encryption keeps your emails confidential and secure.

Why I picked Canary Mail: Canary Mail stands out for its commitment to privacy, offering a suite of data-protection features. You can encrypt emails with a single tap, giving you peace of mind for sensitive communications. The app's focus on security doesn't compromise usability, and the intuitive interface makes it simple to manage your emails while keeping them secure.

Standout Features and Integrations:

Features include search tools that help you find emails quickly, read receipts that show when your emails have been opened, and a snooze feature that temporarily hides emails so you can focus on more important tasks.

Integrations include Google Gmail, Apple iCloud, Proton Mail, Todoist, Asana, and more.

Microsoft Outlook is an email client and personal information manager designed for businesses and professionals. Its integrated calendar features make communicating and scheduling more efficient.

Why I picked Microsoft Outlook: Outlook's strong integration with Microsoft Office makes it ideal for businesses that rely on Microsoft products. You can schedule meetings directly from your inbox to help your team stay organized, and the focused inbox feature shows you your most important emails first. The app's integrated calendar also lets you coordinate schedules.

Standout Features and Integrations:

Features include email categorization to manage messages efficiently, customizable rules to automate email sorting and prioritization, and a built-in task manager to keep track of your to-do lists.

Integrations include Microsoft 365 and more.

Superhuman Mail is an email client tailored for busy professionals who need to manage their emails quickly and efficiently. It focuses on delivering a fast email experience with advanced features that increase productivity.

Why I picked Superhuman Mail: Superhuman Mail prioritizes speed and efficiency, making it a top choice for users who want to process emails quickly. The app's keyboard shortcuts let you navigate and manage emails without a mouse, and the split inbox feature helps you focus by isolating important emails. Also, the app's undo send feature gives you further peace of mind.

Standout Features and Integrations:

Features include a powerful search function to find emails instantly, read-status indicators to see when emails have been opened, and follow-up reminders so you never miss an important response. Superhuman Mail also includes its own built-in AI assistant to help with drafting emails and scheduling meetings.

Integrations include HubSpot, Pipedrive, Salesforce, and more.