Difference between at and to

Question

Which sentence is correct?

Please confirm that you want this sms to be sent to 10 clients?

or

Please confirm that you want this sms to be sent at 10 clients?

Answer 1

I think you send sth to an address and you send sth to a group of people/clients. You can also send sth to somebody at an address.

I'd use the other one to send sth at a point of time.

To sum up:
"Confirm that you want this sms to be sent to 10 clients?"
But: "Confirm that you want this sms to be sent at 10 pm?"

Answer 2

Clients are persons. The preposition "to" is used for showing who receives something. We usually use "at" for a place. Sometimes "to" is also used for a location or place. Pease send it at/to my address.

So the first sentence with the use of "to" is grammatically correct.

Answer 3

This is a confusing distinction. When going to or sending something toward a destination, we typically use "to," but when arriving or leaving something at a location we use "at."

We are going to the park We are meeting at the park. Please take this envelope to my office. Please leave this envelope at my office.