Best Outlook Office365 Apps

250+ iOS apps curated and reviewed

4.5 avg rating
18 free apps
Updated September 2026

Microsoft Outlook is the household name in outlook office365, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Outlook Office365 Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Microsoft OutlookMicrosoft OutlookFree4.8★ (9.2M)YesYesSep 2026
2Mail App for Outlook 365Mail App for Outlook 365Free3.7★ (6)YesYesAug 2026
3MailMailFree4.6★ (4.4M)NoNoSep 2026
4Microsoft CopilotMicrosoft CopilotFree4.7★ (1.3M)YesYesSep 2026
5Microsoft 365 AdminMicrosoft 365 AdminFree4.6★ (5.8K)NoNoSep 2026
6Mail App for OutlookMail App for OutlookFree4.5★ (6.8K)NoYesSep 2026
7Microsoft TeamsMicrosoft TeamsFree4.8★ (3.4M)NoYesSep 2026
8myMail box: email client appmyMail box: email client appFree4.4★ (18K)YesNoSep 2026

Top Picks for Outlook Office365

Microsoft Outlook#1

Microsoft Outlook by Microsoft Corporation

Secure Email, Calendar & Files
Editor's Choice
📊 Productivity
4.8😐(9.2M ratings)
FreeAdsIn-App Purchases
#11in Productivity
Microsoft Outlook screenshot 1
Microsoft Outlook screenshot 2
Microsoft Outlook screenshot 3
Microsoft Outlook screenshot 4
Microsoft Outlook screenshot 5
Microsoft Outlook screenshot 6

Consolidate all your email accounts and calendars into one streamlined application. Manage your inbox, schedule meetings, and access files from various cloud services. Enhance productivity with AI-powered writing assistance and smart inbox features.

What We Love

  • 🚀 Great for corporate email
  • 👍 Customizable and user-friendly
  • 🚀 Seamless integration with Microsoft 365
  • 👍 Solid email and calendar functionality

Room to Improve

  • 🐛 Buggy and unstable at times
  • 🔋 High battery consumption
  • 🔒 Security issues with password resets
  • 👎 Limited file attachment options
Mail#3

Mail by Apple

Worth Considering
📊 Productivity
4.6😐(4.4M ratings)
Free
Mail screenshot 1
Mail screenshot 2
Mail screenshot 3

Consolidate all your email accounts into a single, organized inbox. Prioritize important messages, quickly respond with smart replies, and manage your inbox efficiently with features like scheduling and snoozing. Enjoy enhanced privacy with IP address hiding and read receipt prevention.

What We Love

  • 🚀 Efficient email management
  • 🔒 Secure and private
  • 👍 Simple and intuitive interface
  • 💡 Useful categorization of emails

Room to Improve

  • 🐛 Inconsistent swipe gestures
  • 🐛 Unreliable search function
  • 🐛 Emails disappearing or not syncing properly
  • 🐛 Slow email download and loading times
  • 🐛 Buggy performance after updates

More Outlook Office365 apps to explore

FAQ about Outlook Office365

What are the best outlook office365 apps for iPhone?
Microsoft Outlook tops our outlook office365 apps ranking as of September 2026, with a 4.8-star average from 9.2M App Store ratings, and it's free to download.
Yes — 18 of the top outlook office365 apps we rank are free to download, including Microsoft Outlook and Mail App for Outlook 365.
Microsoft Outlook shows ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 250+ outlook office365 apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This application consolidates all your email accounts and calendars into a single, convenient location. It helps you manage your inbox, schedule meetings, and access files from various cloud storage services. The app also offers AI-powered features to enhance productivity, such as summarizing long email threads and assisting with writing.
Key features include a smart inbox that sorts messages, quick swipe actions for managing emails, easy sharing of meeting availability, and the ability to find contacts and trips. You can also view and attach files from services like OneDrive and Dropbox without downloading them, and edit Office documents directly within the app.

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