Please check the table below for supported mail clients.
| Applications | Supported? | Extra Notes |
| Outlook Web Access | Yes | https://Mail.Office365.com |
| Outlook 365 (Mac and PC) | Yes | |
| Outlook 2019 | Yes | |
| Outlook 2016 | Yes | |
| Outlook 2013 | No | Will need to upgrade version or use Outlook Web Access (https://Mail.Office365.com) |
| Pre-Outlook 2013 | No | Will need to upgrade version or use Outlook Web Access (https://Mail.Office365.com) |
| Mac Mail on OS 10.13 (High Sierra) or earlier | No | Need to upgrade to a new version of macOS or use Outlook Web Access (https://Mail.Office365.com) |
| Mac Mail on OS 10.14 (Mojave) or later | Yes | There is a bug in Mac Mail that can cause your Office 365 profile to be deleted if the iCloud Keychain is enabled. Until this bug is corrected by apple you may need to disable the iCloud Keychain as a workaround. |
| Linux Evolution Mail | Yes | Or other Linux mail application that support Modern Authentication. Configuration Information |
| Thunderbird (Version < 77.0b1) | No | |
| Thunderbird (Version > 77.0b1) | Yes | |
| Eudora | No | |
| Pine | No | |
| Other IMAP4 or POP3 | No |
Smartphone/Tablet/Mobile Device
| Applications | Supported? | Notes |
| Outlook Web Access | Yes | https://Mail.Office365.com |
| Outlook | Yes | Available in the Apple and Android store |
| Mail on Android | No | Download Outlook for the Android app from the Android store or use Outlook Web Access (https://Mail.Office365.com) |
| Mail on iOS 13 or later | Yes | You may need to delete and re-add your mail profile to get Duo MFA to work. |
| Mail on iOS 12 or earlier | No | Upgrade to iOS 11 or later or use Outlook Web Access (https://Mail.Office365.com) |
| Chromebooks | ? | We are still testing this. Supported with Outlook Web Access (https://Mail.Office365.com) |
