Issue deleting emails on Gear S2

[Pastorhss]

Why is it that when I delete emails on my phone (Samsung Galaxy S7 edge) or Outlook (PC) they do not delete on my Gear S2 3G? Yet, when I delete them on the Gear S2 watch, they delete on phone and PC.

Please help. I receive many emails, and after deleted on phone or PC I must go to the watch and delete them one-by-one!

Thanks.