Hi! I understand eM Client crashes when you press send on your Windows 11 machine. That’s definitely something we want to fix for you.

To help me guide you better, could you tell me:
- Is this crashing only happening when you press send, or does it happen in other actions too?
- Have you tried reinstalling eM Client or updating it to the latest version?
- What version of eM Client are you currently using?
- Are you connected to any specific mail provider (like Gmail, Outlook, Exchange)?

In the meantime, I’ll suggest a few steps you can try to resolve this crash on send:

1. Update eM Client
Make sure you have the latest version of eM Client installed. Older versions can have bugs that cause crashes, especially when combined with Windows 11 updates.

2. Run as Administrator
Try launching eM Client with administrator rights — right-click the eM Client shortcut and select "Run as administrator". Sometimes permission issues cause crashes on certain actions.

3. Disable Graphics Acceleration
Windows 11 and eM Client sometimes have conflicts with graphics settings.
- Go to Windows Settings > System > Display > Graphics settings
- Add MailClient.exe (usually in Program Files (x86)\eM Client)
- Set it to "Power saving" or "Basic" instead of "High performance"
- Restart eM Client and try sending again.

4. Repair or Reinstall eM Client
If the above does not help:
- Fully uninstall eM Client (make sure to save any important data or export your email if possible)
- Delete leftover files in C:\Program Files (x86)\eM Client and user data folder (usually C:\Users\<username>\AppData\Roaming\eM Client)
- Download the latest version from the official website and reinstall.

5. Check Mail Account Settings
Sometimes certain mail accounts, especially Exchange or Outlook, may cause crashes due to expired or corrupted certificates. Check if you can update or re-authenticate your account credentials in eM Client.

Please let me know the results or any details you can provide. We can then dive deeper if needed!

Are you satisfied with these initial steps?