Sign off email with j

Here are a few options for signing off an email with just the letter "J":

1. J
2. J,
3. Just J
4. Yours truly, J
5. Best, J
6. Kind regards, J
7. Warm regards, J
8. Sincerely, J
9. All the best, J
10. Cheers, J

Choose the one that best fits your tone and style!