Does a Comma Come After Kind Regards?

These days, many organisations choose to use Yours sincerely for all letters. Some even sign them off with Kind regards or Regards. As with the greeting, you do not need any commas after the sign-off.

Where does the comma go in an email greeting?

When the salutation in your email starts with Hello or Hi, you should put a comma before the name of the person you're addressing. It is also an accepted practice to put a comma after the name of the person you're addressing.

Should we use comma after Thanks and regards?

is correct. Without the comma it would imply that you're thanking John Doe.