Email client ที่นิยมใช้งานสำหรับ Windows Desktop Clients ก็จะมี Outlook 2019, Outlook 2016, eMclient และ Windows Mail ในส่วน MacOS Destop Clients ก็จะมี Outlook 2019 และ MacMail ในส่วน Mobile Clients จะมี iOS Mail, Gmail (Andoid), Samsung Mail และ Outlook (iOS, Android) ในส่วนของ Smartermail นั้นจะมีส่วนเสริม EAS (Exchange Active Sync) และ MAPI เพื่อรองรับการทำงาน กับ Client ต่างๆ ดังนี้
Windows Desktop Clients
| Feature | Outlook 2019 |
Outlook 2016 |
eM Client*** |
Windows Mail* |
|---|---|---|---|---|
| Email Folders | MAPI | MAPI | EWS | EAS |
| Contacts | MAPI | MAPI | EWS | EAS |
| GAL** | MAPI | MAPI | EWS | EAS |
| Primary Calendar | MAPI | MAPI | EWS | EAS |
| Secondary Calendar | MAPI | MAPI | EWS | EAS |
| Tasks | MAPI | MAPI | EWS | n/a |
| Notes | MAPI | n/a | EWS | n/a |
| Shared Folders | MAPI | MAPI | EWS | IMAP |
| Shared Contacts | MAPI | MAPI | EWS | n/a |
| Shared Calendars | MAPI | MAPI | EWS | n/a |
| Shared Tasks | MAPI | MAPI | EWS | n/a |
| Shared Notes | MAPI | MAPI | EWS | n/a |
| Room Scheduling | MAPI | MAPI | EWS | n/a |
| Synced Categories | MAPI | MAPI | n/a | n/a |
| Autodiscover | MAPI | MAPI | EWS | EAS |
*Includes People and Calendar applications for Windows 10
**GAL works on search and/or autocomplete only
***Some features require a Pro license
MacOS Desktop Clients
| Feature | Outlook 2019 |
Mac Mail* |
|---|---|---|
| Email Folders | EWS | EWS |
| Contacts | EWS | EWS |
| GAL | EWS | EWS |
| Primary Calendar | EWS | EWS |
| Secondary Calendar | EWS | EWS |
| Tasks | EWS | n/a |
| Notes | EWS | EWS |
| Shared Folders | EWS | n/a |
| Shared Contacts | EWS | n/a |
| Shared Calendars | EWS | n/a |
| Shared Tasks | EWS | n/a |
| Shared Notes | EWS | n/a |
| Domain Calendars | EWS | n/a |
| Synced Categories | EWS | n/a |
| Autodiscover | EWS | EWS |
*Includes Calendar, Contacts and Notes applications for MacOS
Mobile Clients
| Feature | iOS Mail* |
Gmail (Android) |
Samsung Mail** |
Outlook (iOS/Android) |
|---|---|---|---|---|
| Email Folders | EAS | EAS | EAS | EAS |
| Contacts | EAS | EAS | EAS | EAS |
| GAL | EAS | EAS | EAS | EAS |
| Primary Calendar | EAS | EAS | EAS | EAS |
| Secondary Calendar | EAS | EAS | EAS | EAS |
| Tasks | EAS | n/a | EAS | n/a |
| Notes | EAS | n/a | EAS | n/a |
| Shared Folders | EAS | EAS | EAS | EAS |
| Shared Contacts | EAS | n/a | EAS | n/a |
| Shared Calendars | EAS | EAS | n/a | n/a |
| Shared Tasks | EAS | n/a | EAS | n/a |
| Shared Notes | EAS | n/a | n/a | n/a |
| Domain Calendars | n/a | n/a | n/a | n/a |
| Synced Categories | n/a | n/a | EAS | n/a |
| Autodiscover | EAS | n/a | EAS | EAS |
*Includes iOS Calendar, Contacts, Reminders and Notes apps
**Includes Samsung Calendar and Contacts apps
