emclient.exe

eM Client Email Client

Application ProcessSafeEmail Client

CPU Usage

2-12%

Memory

120-400 MB

Location

Program Files or Program Files (x86)

Publisher

eM Client

Quick Answer

emclient.exe is safe. It is the executable for the eM Client email application, designed to manage mail, calendars, contacts, and chat with background services to keep data synchronized.

Is it a Virus?

✔ NO - Safe

Must be in Program Files\eM Client\eM Client.exe or Program Files (x86)\eM Client\eM Client.exe

Warning

Many processes normal

eM Client runs multiple background and UI components for mail, calendar, and chat

Can I Disable?

✔ YES

Quit EM Client or disable startup; ensure you have an alternative mail client if needed

What is emclient.exe?

emclient.exe is the runtime executable for the eM Client email application. It launches the main user interface, coordinates mail, calendar, contacts, and chat features, and starts background services for synchronization, backups, and notifications. You may see several emclient-related processes when the program is running.

This architecture uses separate processes for UI, mail sync, indexing, and notifications to improve responsiveness, stability, and security while keeping data synchronized with the server.

Quick Fact: eM Client uses modular processes so a stalled mail fetch won't freeze the entire app.

Types of eM Client Processes

Main UI Process: User interface and window management
Mail Sync Process: Background mail synchronization and server communication
Database/Indexing Process: Local search indexing and data caching
Notification Service: System tray notifications and alerts
Calendar/Contacts Sync: Calendar and contacts synchronization tasks
Chat/Tasks Processor: Chat messages and task synchronization

Is emclient.exe Safe?

Yes, emclient.exe is safe when it's the legitimate file from eM Client downloaded from official sources (emclient.com or pre-installed by manufacturer).

Is emclient.exe a Virus or Malware?

The real emclient.exe is NOT a virus. However, malware can impersonate legitimate file names; verify publisher and location.

How to Tell if emclient.exe is Legitimate or Malware

File Location: Must be in C:\Program Files\eM Client\eM Client.exe or C:\Program Files (x86)\eM Client\eM Client.exe. Any emclient.exe elsewhere is suspicious.
Digital Signature: Right-click the process in Task Manager → Open file location → Right-click eM Client.exe → Properties → Digital Signatures. Should show the signer as "eM Client".
Resource Usage: Normal usage is 2-12% CPU per instance, 120-400 MB total memory. Extremely high or constant usage when EM Client is not actively used is suspicious.
Behavior: eM Client should run when the application is open. Multiple silent background processes when the app isn't running could indicate malware.

Red Flags: If emclient.exe is located in unusual folders (like Temp, AppData\Roaming, or System32), runs when EM Client isn't open, has no valid digital signature, or uses excessive resources constantly, scan your system with antivirus software immediately.

Why Is emclient.exe Running on My PC?

emclient.exe runs when you open eM Client or when the app is configured to run in the background to keep mail, calendars, and notifications up to date.

Reasons it's running:

Active Email/Calendar Use: You're actively using eM Client for mail, calendar, or chat; the app maintains persistent connections and sync tasks.
Background Sync: eM Client syncs mail, calendar, contacts, and tasks in the background to keep data current.
Startup Program: eM Client is configured to start when Windows boots, so you may see emclient.exe at login.
Notifications and Alerts: The app runs a background notifier to deliver new mail and calendar reminders.
Indexing and Search: Local indexing of messages and contacts occurs in the background to speed up search.

Can I Disable or Remove emclient.exe?

Yes, you can disable emclient.exe. It's safe to close EM Client when not in use, and you can uninstall it completely if you prefer a different email client.

How to Stop emclient.exe

Exit EM Client: Use File → Exit or click the X to close the application
End EM Client at Startup: Task Manager → Startup tab → Disable eM Client
Quit Background Tasks: In EM Client Settings, disable background sync or notification service if available
Prevent Startup: Task Manager → Startup tab → Disable eM Client so it does not start on login
Stop System Tray Backgrounds: In EM Client Settings → General → Run in background, turn off 'Continue running in background' if present

How to Uninstall eM Client

✔ Windows Settings → Apps → Apps & Features → eM Client → Uninstall
✔ Control Panel → Programs → Uninstall a program → eM Client → Uninstall
✔ Consider alternative mail clients: Outlook, Thunderbird, or others

Common Problems: High CPU or Memory Usage

If emclient.exe is consuming excessive resources:

Common Causes & Solutions

Too Many Folders or Large Attachments: Archive old emails or limit attachment previews; consider offline caching settings.
Background Sync Overload: Reduce sync frequency in Settings or disable non-critical accounts temporarily.
Indexing During Initial Setup: Allow initial indexing to complete; it will normalize after first pass.
Resource-Heavy Plugins: Disable or remove unnecessary add-ons and plugins in Settings.
Outdated Software: Update EM Client to the latest version to fix known leaks and performance issues.
Corrupted Local Data: Run Database Integrity checks within EM Client or reset local cache if advised.

Quick Fixes:
1. Open EM Client Task Manager (if available) to identify high-usage modules
2. Pause or disable non-essential accounts and notifications
3. Update EM Client to the latest version
4. Clear cache or rebuild local databases as instructed by EM Client
5. Restart EM Client after applying changes

Frequently Asked Questions

Is emclient.exe a virus?

No, the legitimate emclient.exe from eM Client is not a virus. Verify the file location at C:\Program Files\eM Client\eM Client.exe or C:\Program Files (x86)\eM Client\eM Client.exe and check the publisher in the digital signature (should show eM Client).

Why is emclient.exe using so much CPU?

High CPU usually results from heavy mail syncing, large mailboxes, or active calendar/notification tasks. Check EM Client Task Manager (if available) or Windows Task Manager to identify the component, then pause syncing or limit accounts temporarily.

Can I delete emclient.exe?

You can uninstall eM Client through Windows Settings → Apps if you no longer need it. Deleting the executable manually can leave system instability; use the proper uninstall path to remove all components.

Can I disable emclient.exe?

Yes. Close EM Client and disable startup in Task Manager. In-app settings, you can also turn off 'Run in background' options to prevent background activity when the app is closed.

Why does emclient.exe start at login?

EM Client can be configured to start with Windows to ensure email notifications are ready on login. Disable it in Task Manager → Startup or in EM Client settings under General to stop automatic startup.

How do I fix sync or notification issues in EM Client?

Check account settings, ensure proper IMAP/SMTP configurations, verify server status, and refresh credentials. Restart EM Client, rebuild the index if needed, and ensure notifications are enabled in Settings.