Hi there! I understand you've been sending emails through JPay all last week, but your friend hasn't received any of them. Let's get this sorted out together.

To start, could you tell me if you see any error messages when you send an email? Also, do you know if your friend has mentioned receiving any notifications or messages from JPay at all? And just to confirm, are you using the JPay website on your Windows 10 device or the app?

Meanwhile, here are some common steps we can try to resolve email delivery issues on JPay:

1. Check Your Internet Connection: Make sure your connection is stable. Sometimes intermittent connectivity can cause sending issues.

2. Verify JPay Account and Stamps: Ensure your JPay account is active and that you have enough virtual stamps to send emails. Each email requires stamps.

3. Clear Cache or Reinstall App: If you are using the JPay app, clearing the app cache or uninstalling and reinstalling it can fix corrupted data that might block sending.

4. Confirm Facility Email Policies: Some correctional facilities review or censor emails before delivery, so delays or non-delivery might happen due to reviewing processes. If your email violated any content rules, JPay usually sends a notification email about censorship.

5. Check Sent Messages: On the JPay website, you can check your sent emails folder to confirm if messages registered as sent.

6. Ask Your Friend to Verify: Verify with your friend if the facility has any restrictions or if their email inbox with JPay is full or inactive.

If you’ve tried all these or have more details, let me know so I can guide you further or suggest advanced troubleshooting. Also, if there’s an error message or notification, that info would really help.

Are you comfortable checking on these things now?