Best Office 365 Email Apps

246+ iOS apps curated and reviewed

4.4 avg rating
19 free apps
Updated October 2026

Looking for free office 365 email apps? 19 of our 246+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Office 365 Email Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Microsoft OutlookMicrosoft OutlookFree4.8★ (9.4M)YesYesNov 2026
2Mail App for Outlook 365Mail App for Outlook 365Free3.7★ (6)YesYesOct 2026
3Microsoft 365 AdminMicrosoft 365 AdminFree4.6★ (5.8K)NoNoNov 2026
4MailMailFree4.6★ (4.6M)NoNoNov 2026
5Boxer - Workspace ONEBoxer - Workspace ONEFree4.4★ (77K)NoNoNov 2026
6Microsoft PowerPointMicrosoft PowerPointFree4.7★ (590K)NoYesNov 2026
7myMail box: email client appmyMail box: email client appFree4.4★ (18K)YesNoNov 2026
8Newton Mail - Email AppNewton Mail - Email AppFree4.3★ (3.1K)NoYesNov 2026

Top Picks for Office 365 Email

Microsoft Outlook#1

Microsoft Outlook by Microsoft Corporation

Secure Email, Calendar & Files
Editor's Choice
📊 Productivity
4.8😐(9.4M ratings)
FreeAdsIn-App Purchases
#15in Productivity
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Consolidate all your email accounts and calendars into one streamlined application. Manage your inbox, schedule meetings, and access files effortlessly. Enhance your productivity with smart features and AI-powered assistance for writing and summarizing emails.

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 App for Outlook 365#2

Mail App for Outlook 365 by ElevenThirteen LLC

Exchange express office email
Strong Contender
📊 Productivity
3.7(6 ratings)
FreeAdsIn-App Purchases
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Manage your office email efficiently with instant search, an intelligent inbox that prioritizes important messages, and quick filing options. This app supports Exchange and IMAP accounts, offering a streamlined experience for professionals.

4.6😊(5.8K ratings)
Free
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Manage your Microsoft 365 or Office 365 business subscription from your mobile device. Add users, reset passwords, manage devices, and monitor service health. Stay informed with critical notifications and support requests on the go.

What We Love

  • 💻 Easy to use
  • 🔑 Convenient password resets
  • 🚀 Efficient admin tasks on the go
  • 📱 Helpful for mobile management
  • 🔒 Secure authentication
  • 🔍 Useful for monitoring service health

Room to Improve

  • 🐛 Crashes and freezes
  • 🔍 Limited functionality compared to web portal
  • 🔍 Difficult to switch between accounts
  • 🔍 Lack of advanced admin features
  • 🔍 Inconsistent user experience

More Office 365 Email apps to explore

FAQ about Office 365 Email

What are the best office 365 email apps for iPhone?
Microsoft Outlook tops our office 365 email apps ranking as of October 2026, with a 4.8-star average from 9.4M App Store ratings, and it's free to download.
Yes — 19 of the top office 365 email 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 October 2026.
We track 246+ office 365 email apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

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