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Best Office 365 Email Apps

248+ iOS apps curated and reviewed

4.5 avg rating
19 free apps
Updated August 2026

Looking for free office 365 email apps? 19 of our 248+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Office 365 Email Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Microsoft OutlookMicrosoft OutlookFree4.8★ (9.1M)YesYesAug 2026
2Mail App for Outlook 365Mail App for Outlook 365Free3.7★ (6)YesYesJul 2026
3MailMailFree4.7★ (4M)NoNoAug 2026
4Microsoft 365 CopilotMicrosoft 365 CopilotFree4.7★ (1.3M)YesYesAug 2026
5Microsoft 365 AdminMicrosoft 365 AdminFree4.6★ (5.8K)NoNoAug 2026
6zSpreadsheetzSpreadsheetFree was $0.993.8★ (14)NoNoJul 2026
7Boxer - Workspace ONEBoxer - Workspace ONEFree4.4★ (77K)NoNoAug 2026
8myMail box: email client appmyMail box: email client appFree4.4★ (18K)YesNoAug 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😐(9.1M ratings)
FreeAdsIn-App Purchases
#8in 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
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
Mail App for Outlook 365 screenshot 1
Mail App for Outlook 365 screenshot 2
Mail App for Outlook 365 screenshot 3
Mail App for Outlook 365 screenshot 4
Mail App for Outlook 365 screenshot 5
Mail App for Outlook 365 screenshot 6

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 Inc.

Worth Considering
📊 Productivity
4.7😐(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

More Office 365 Email apps to explore

4
Microsoft 365 Copilot
Microsoft 365 Copilot
Microsoft 365 Copilot
AI-powered productivity
Free

This AI-powered app helps you be more productive at work. Chat with an AI assistant to create content, manage projects, find files, and learn new concepts. It offers voice interaction and expert insights for various tasks.

Chat with AI assistantVoice interactionFind files quickly
📊 Productivity
(1.3M)
free with in-app purchases
5
Microsoft 365 Admin
Microsoft 365 Admin
Microsoft 365 Admin
by Microsoft Corporation
Free

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.

Manage users and groupsReset passwordsManage devices
📊 Productivity
(5.8K)
free
6
zSpreadsheet
zSpreadsheet
zSpreadsheet
by Zack Smith
Free
$0.99 | 100% OFF

Create and edit spreadsheets with a generous row and column limit. Perform complex calculations, format cells, and generate charts. Easily share your work via email or print it wirelessly.

Up to 26 columns x 2500 rowsComplex calculation functionsCell formatting options
💼 Business
(14)
free
7
Boxer - Workspace ONE
Boxer - Workspace ONE
Boxer - Workspace ONE
Omnissa Workspace ONE
Free

Manage email, calendar, and contacts efficiently with customizable tools like swipe gestures and quick replies. This app offers a modern, intuitive interface designed for professionals to boost productivity on the go. It also includes features for seamless conference call dialing and robust data security.

Unified email, calendar, and contactsCustomizable swipe gesturesQuick reply templates
💼 Business
(77K)
free
8
myMail box: email client app
myMail box: email client app
myMail box: email client app
E-mail for Gmail, Hotmail, AOL
Free

Consolidate and manage multiple email accounts from various providers in a single, user-friendly interface. Enjoy customizable notifications, enhanced security features, and efficient search capabilities to streamline your communication.

Unified inbox for multiple email accountsCustomizable push notificationsEmail thread view
📊 Productivity
(18K)
free with in-app purchases
9
Newton Mail - Email App
Newton Mail - Email App
Newton Mail - Email App
Supercharged Email For Pros
Free

Streamline your email communication with advanced features designed for professionals. Manage multiple accounts, track emails, and integrate with productivity apps to boost efficiency and declutter your inbox.

Read ReceiptsSend LaterTidy Inbox
💼 Business
(3.1K)
free with in-app purchases
10
Temp Mail - Temporary Email
Temp Mail - Temporary Email
Temp Mail - Temporary Email
Instant disposable address
Free

Instantly generate a disposable temporary email address to receive emails and attachments without revealing your real inbox. Keep your personal email secure from spam, phishing, and unwanted mailings. Emails are automatically deleted after a set period.

Instant disposable email generationReceive emails and attachmentsHide from spam and phishing
🔧 Utilities
(20K)
free with in-app purchases
11
Mail+ for Outlook
Mail+ for Outlook
Mail+ for Outlook
by MAIL PLUS APP LLC
$4.99

Access Outlook email and calendar securely on your iOS device. Manage work and personal accounts separately with tools designed for mobile business users, including rich text editing and scheduling assistance. Supports various Exchange versions and popular email services.

Secure Outlook email accessCalendar event managementRich HTML text editing
💼 Business
(840)
free with in-app purchases
12
Common Task Guide for Office 365
Common Task Guide for Office 365
Common Task Guide for Office 365
by Shane Bedasee
Free

This tutorial-based application helps Office 365 administrators learn how to perform common tasks across various services like Exchange Online, SharePoint, and Office apps. It provides step-by-step guidance based on frequently encountered support requests.

Tutorial-based task guidanceCovers Office 365 servicesExchange Online instructions
💼 Business
(12)
free
13
Superhuman Mail
Superhuman Mail
Superhuman Mail
The most productive email app
Free

This email application streamlines inbox management with AI-powered drafting and summarization. It helps users prioritize important messages, schedule emails for optimal delivery, and collaborate with teams through shared email views and integrated CRM tools. Save time and improve responsiveness with advanced features.

AI email draftingAutomatic email summarizationCustomizable inbox triage
📊 Productivity
(3.5K)
free with in-app purchases
14
Proton Mail - Encrypted Email
Proton Mail - Encrypted Email
Proton Mail - Encrypted Email
Fast, private & secure mail
Free

This encrypted email service from Switzerland prioritizes user privacy with end-to-end encryption. It offers robust security features to protect your communications from phishing, spam, and tracking, allowing you to manage your inbox with ease.

End-to-end encryptionPassword-protected emailsMultiple account support
📊 Productivity
(46K)
free with in-app purchases
15
Blue Mail - Email | Calendar
Blue Mail - Email | Calendar
Blue Mail - Email | Calendar
AI-Powered, Fast & Secure
Free

Manage all your email accounts from various providers in one unified, ad-free inbox. This app offers AI-powered writing assistance, an integrated calendar, and advanced spam management for enhanced productivity.

Unified inbox for multiple email accountsAI-powered email writing and summarizationIntegrated calendar with event management
💼 Business
(10K)
free with in-app purchases
16
Microsoft SharePoint
Microsoft SharePoint
Microsoft SharePoint
by Microsoft Corporation
Free

Access organizational files, news, and colleagues on the go. This app uses AI to personalize your experience, helping you find expertise and content quickly. Stay connected with your team and collaborate effectively from anywhere.

Personalized file and news discoveryAI-powered search for content and expertiseAccess team and communication sites
📊 Productivity
(139K)
free
17
Mail – Organized Email
Mail – Organized Email
Mail – Organized Email
Email - Fast & Secure Mail
Free
📊 Productivity
(0)
18
Speaking Email - voice reader
Speaking Email - voice reader
Speaking Email - voice reader
Email reimagined in audio
Free
$0.99 | 100% OFF

This app reads your emails aloud and allows you to manage them using voice commands. It's ideal for hands-free and eyes-free email access, benefiting drivers and individuals with visual impairments or motor difficulties.

Reads emails aloudVoice commands for replies and managementHands-free and eyes-free operation
📊 Productivity
(206)
free with in-app purchases
19
TypeApp Email, Mail & Exchange
TypeApp Email, Mail & Exchange
TypeApp Email, Mail & Exchange
Upgrade your Email Experience
Free

Manage all your email accounts from a single, customizable app. Enjoy instant smart push notifications, a unified inbox, and intelligent features like email clusters for simplified organization. Protect your inbox with Touch ID and passcode security.

Unified inbox for all email accountsInstant smart push notificationsEmail clusters for organization
📊 Productivity
(908)
free with in-app purchases
20
Security Browser for M365
Security Browser for M365
Security Browser for M365
by SATERAITO OFFICE, INC.
Free
📊 Productivity
(0)

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 August 2026, with a 4.8-star average from 9.1M 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 August 2026.
We track 248+ office 365 email apps on the iOS App Store as of August 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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microsoft office 365 email