One of the biggest drawbacks of eM Client on Android is that it significantly degrades the overall user experience compared to the native Android mail application.

The most frustrating issue is contact integration. While eM Client synchronizes contacts internally within the application, it does not properly synchronize them with Android's native Contacts database. As a result, incoming and outgoing calls, SMS messages, and other communication logs often display only phone numbers instead of contact names.

In practical terms, this means that when a user receives a call, makes a call, or sends and receives text messages, they cannot immediately see who the communication was with. To identify the person behind the number, the user must open eM Client, navigate through multiple menus, search for the contact, and manually verify the information.

What would normally be visible at a glance in the Android dialer or messaging applications now requires approximately six separate screen taps.

This creates a fragmented user experience and defeats one of the key advantages of smartphones. Seamless integration between applications. The native Android ecosystem is designed around a shared contact database that allows the phone app, messaging app, and other communication tools to work together effortlessly.

By keeping contacts isolated within eM Client, users lose that integration.

For users who rely heavily on their phone for daily communication, this becomes more than a minor inconvenience. it is a constant source of frustration. Something as simple as identifying who called becomes a repetitive and unnecessary task, making the overall experience feel cumbersome and inefficient compared to using the standard Android mail application.

In short, while eM Client may offer strong email functionality, its lack of proper integration with Android's contact system negatively impacts usability and creates a noticeably worse day-to-day experience for mobile users.

Just FYI.