Best Outlook Sign In Apps

237+ iOS apps curated and reviewed

4.2 avg rating
19 free apps
Updated August 2026

Microsoft Outlook is the household name in outlook sign in, but it's far from the only option. We track 237+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Outlook Sign In Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Microsoft OutlookMicrosoft OutlookFree4.8★ (9.2M)YesYesSep 2026
2MailMailFree4.7★ (4M)NoNoSep 2026
3Email for Hotmail, OutlookEmail for Hotmail, OutlookFree4.0★ (2.1K)NoYesAug 2026
4Mail App for OutlookMail App for OutlookFree4.5★ (6.8K)NoYesAug 2026
5myMail box: email client appmyMail box: email client appFree4.4★ (18K)YesNoSep 2026
6Mail+ for OutlookMail+ for Outlook$4.993.9★ (840)NoYesAug 2026
7Email for Hotmail & OutlookEmail for Hotmail & OutlookFree4.1★ (2.9K)NoYesSep 2026
8Email App for GmailEmail App for GmailFree4.4★ (4.1K)YesNoAug 2026

Top Picks for Outlook Sign In

Microsoft Outlook#1

Microsoft Outlook by Microsoft Corporation

Secure Email, Calendar & Files
Editor's Choice
📊 Productivity
4.8😐(9.2M ratings)
FreeAdsIn-App Purchases
#6in 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#2

Mail by Apple

Strong Contender
📊 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
Email for Hotmail, Outlook#3

Email for Hotmail, Outlook by Hoang Huu Thang

Support Outlook, Hotmail
Worth Considering
🔧 Utilities
4.0😞(2.1K ratings)
FreeIn-App Purchases
Email for Hotmail, Outlook screenshot 1
Email for Hotmail, Outlook screenshot 2
Email for Hotmail, Outlook screenshot 3
Email for Hotmail, Outlook screenshot 4
Email for Hotmail, Outlook screenshot 5
Email for Hotmail, Outlook screenshot 6

Manage your Hotmail, Outlook, Live, and MSN email accounts with a fast, secure, and intuitive app. It offers unified inbox management, push notifications, advanced search, and secure sign-in options for a seamless email experience.

What We Love

  • 👍 Good overall experience
  • 🚀 Fast email delivery

Room to Improve

  • 🐛 Frequent crashes and bugs
  • 💸 Excessive ads and pop-ups
  • 🔍 Difficult to manage and delete emails

More Outlook Sign In apps to explore

4
Mail App for Outlook
Mail App for Outlook
Mail App for Outlook
Inbox Zero Mail Client
Free

This app offers a fast and efficient way to manage your Outlook inbox, focusing on quick triaging and instant message sending/receiving. It prioritizes privacy and utilizes a modern codebase for a seamless experience.

Privacy awareFast email management toolsRich keyboard shortcuts
📊 Productivity
(6.8K)
subscription
5
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
6
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
7
Email for Hotmail & Outlook
Email for Hotmail & Outlook
Email for Hotmail & Outlook
Support Hotmail, Outlook, O365
Free

Streamline your email experience with this app designed for control, privacy, and simplicity. Manage multiple accounts, filter messages, and enjoy real-time notifications. It offers advanced features like custom swipes and secure unlocking to help you achieve more with your inbox.

Unified inbox for multiple accountsAdvanced filtering and searchCustomizable swipe gestures
🔧 Utilities
(2.9K)
free with in-app purchases
8
Email App for Gmail
Email App for Gmail
Email App for Gmail
and other mail services
Free

Manage your Gmail and other email accounts with a beautifully designed, fast, and secure application. Enjoy intuitive actions, custom notifications, and advanced security features to keep your inbox organized and protected.

Custom push notificationsUser-friendly interfaceContact avatars and email threads
📊 Productivity
(4.1K)
free with in-app purchases
9
MailBuzzr for Outlook
MailBuzzr for Outlook
MailBuzzr for Outlook
Email for Hotmail and Outlook
Free

Manage all your Hotmail and Outlook accounts in one fast, beautifully designed app. Get smart notifications, organize emails with tags and filters, and undo actions easily. Enjoy a frustration-free email experience with an elegant interface and custom themes.

Unified inbox for multiple accountsSmart notifications with customizable alertsQuick email preview and undo actions
📊 Productivity
(520)
free with in-app purchases
10
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
11
Mail – Organized Email
Mail – Organized Email
Mail – Organized Email
Email - Fast & Secure Mail
Free
📊 Productivity
(0)
12
Sign In Companion (iPhone)
Sign In Companion (iPhone)
Sign In Companion (iPhone)
Mobile sign in and evacuation
Free

Manage your workday and visitor logistics from your smartphone. This app allows for quick check-ins, booking of desks and rooms, and real-time safety roll calls. It also facilitates visitor registration and document management.

Remote and mobile sign-inAuto sign-in and outReal-time safety roll calls
💼 Business
(2)
free
13
Mail App for Outlook 365
Mail App for Outlook 365
Mail App for Outlook 365
Exchange express office email
Free

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.

Instant email searchIntelligent inbox prioritizationQuick mail filing
📊 Productivity
(6)
free with in-app purchases
14
Sync2 Outlook Google & iCloud
Sync2 Outlook Google & iCloud
Sync2 Outlook Google & iCloud
Sync Calendar, Gmail, Contacts
Free

Seamlessly synchronize your Microsoft Outlook data, including emails, calendars, and contacts, with Google, iCloud, and other cloud services. This companion app enables two-way syncing between your PC and mobile devices like iPhone and iPad, even when Outlook is closed.

Sync Outlook with iPhone/iPad via GoogleSync Outlook Calendar with Google CalendarsSync Outlook Contacts with Google Contacts
📊 Productivity
(112)
free
15
Microsoft Authenticator
Microsoft Authenticator
Microsoft Authenticator
Protects your online identity
Free

Securely sign into online accounts with multi-factor authentication, passwordless login, or password autofill. Manage multiple accounts, including non-Microsoft services, and access Microsoft products and services seamlessly.

Multi-factor authentication (MFA)Passwordless sign-inPassword autofill
📊 Productivity
(690K)
free
16
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
(3.6K)
free with in-app purchases
17
Yandex Mail
Yandex Mail
Yandex Mail
Secure inbox for work & life
Free

A secure and efficient email client with built-in translation and document scanning. Manage multiple accounts, unsubscribe from unwanted lists, and even conduct video meetings directly within the app. Offers offline access and robust spam protection.

Built-in translatorDocument scannerOffline email access
📊 Productivity
(14K)
free with in-app purchases
18
Intune Company Portal
Intune Company Portal
Intune Company Portal
Company resources on the go
Free

Access corporate apps, data, and resources securely from your mobile device. Enroll your device, reset passwords, find work-related apps, and manage your enrolled devices. Get IT support contact information directly within the app.

Enroll device for corporate resourcesReset work account passwordDiscover company-provided apps
💼 Business
(707K)
free
19
Winmail Viewer:for DAT,XPS,MSG
Winmail Viewer:for DAT,XPS,MSG
Winmail Viewer:for DAT,XPS,MSG
RAR, Winmail.dat Reader, TNEF
Free

This tool allows users to extract, view, and save the contents of winmaildat, msg, and xps files. It provides a complete solution for managing these file types, including viewing all attachments and rich text messages.

Extract winmaildat, msg, xps filesView file contentsSave extracted files
📊 Productivity
(1)
free
20
ID.me Authenticator
ID.me Authenticator
ID.me Authenticator
by ID.me
Free

This app provides a free multi-factor authentication solution for your account, adding an extra security layer to prevent unauthorized access. It generates secure verification tokens, including time-based codes and push notifications, to confirm your identity during login.

Multi-factor authentication (MFA)Time-based one-time passwords (TOTP)Push notification verification
📊 Productivity
(100K)
free

FAQ about Outlook Sign In

What are the best outlook sign in apps for iPhone?
Microsoft Outlook tops our outlook sign in apps ranking as of August 2026, with a 4.8-star average from 9.2M App Store ratings, and it's free to download.
Yes — 19 of the top outlook sign in apps we rank are free to download, including Microsoft Outlook and Mail.
Microsoft Outlook shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 237+ outlook sign in 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.