"Hey, I just saw Gary's email. I'll reply back to him by the end of the day."
This is one of the most common corporate lingo errors today. When you say "reply", you already mean that you are responding to something that has already been said. By saying "reply back", it is just an unnecessary double emphasis.
So it would just be "I'll reply to Gary's email..blah blah"
Similarly for "return".
Jim's boss asked him, "When are you returning back from your vacation?"
Jim, not being one to let that go, replied "I am returning on the 17th of this month."
You see? When you say "return", you mean "coming BACK", or "giving BACK" or "going BACK".
The BACK is already incorporated into the reply or return.
This is one of the most common corporate lingo errors today. When you say "reply", you already mean that you are responding to something that has already been said. By saying "reply back", it is just an unnecessary double emphasis.
So it would just be "I'll reply to Gary's email..blah blah"
Similarly for "return".
Jim's boss asked him, "When are you returning back from your vacation?"
Jim, not being one to let that go, replied "I am returning on the 17th of this month."
You see? When you say "return", you mean "coming BACK", or "giving BACK" or "going BACK".
The BACK is already incorporated into the reply or return.