Best Microsoft 365 Email Apps

245+ iOS apps curated and reviewed

4.4 avg rating
19 free apps
Updated October 2026

Looking for free microsoft 365 email apps? 19 of our 245+ tracked titles are free to download β€” no subscription, no trial. The rest are premium picks worth paying for.

Compare top Microsoft 365 Email Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Microsoft OutlookMicrosoft OutlookFree4.8β˜… (9.4M)YesYesNov 2026
2Mail App for Outlook 365Mail App for Outlook 365Free3.7β˜… (6)YesYesOct 2026
3MailMailFree4.6β˜… (4.5M)NoNoNov 2026
4Microsoft 365 AdminMicrosoft 365 AdminFree4.6β˜… (5.8K)NoNoOct 2026
5Microsoft CopilotMicrosoft CopilotFree4.7β˜… (1.4M)YesYesNov 2026
6Document Editorβ€”Docs,SheetsDocument Editorβ€”Docs,SheetsFree4.4β˜… (304)NoYesOct 2026
7myMail box: email client appmyMail box: email client appFree4.4β˜… (18K)YesNoNov 2026
8Mail App for OutlookMail App for OutlookFree4.5β˜… (7.9K)NoYesOct 2026

Top Picks for Microsoft 365 Email

Microsoft Outlook#1

Microsoft Outlook by Microsoft Corporation

Secure Email, Calendar & Files
Editor's Choice
πŸ“Š Productivity
4.8😐(9.4M ratings)
FreeAdsIn-App Purchases
#12in 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

  • πŸš€ Great for corporate email
  • πŸ‘ Customizable and user-friendly
  • πŸš€ Seamless integration with Microsoft 365
  • πŸ‘ Solid email and calendar functionality

Room to Improve

  • πŸ› Buggy and unstable at times
  • πŸ”‹ High battery consumption
  • πŸ”’ Security issues with password resets
  • πŸ‘Ž Limited file attachment options
Mail App for Outlook 365#2

Mail App for Outlook 365 by ElevenThirteen LLC

Exchange express office email
Strong Contender
πŸ“Š 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.

Mail#3

Mail by Apple

Worth Considering
πŸ“Š Productivity
4.6😐(4.5M ratings)
Free
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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

  • πŸš€ Efficient email management
  • πŸ”’ Secure and private
  • πŸ‘ Simple and intuitive interface
  • πŸ’‘ Useful categorization of emails

Room to Improve

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

More Microsoft 365 Email apps to explore

FAQ about Microsoft 365 Email

What are the best microsoft 365 email apps for iPhone?
Microsoft Outlook tops our microsoft 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 β€” 19 of the top microsoft 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 245+ microsoft 365 email apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.