sender
n. countable A2 Elementary US //ˈsɛndɝ// UK //sˈɛndɐ// sender
n. the person or organization that sends something, such as a letter, an email, or a package.
n. the person, entity, or device from which a message or object originates. Often used in contrast with 'recipient' or 'receiver'.
The sender forgot to include their return address.
If you receive an email from an unknown sender, you should avoid clicking on any links inside it.
The protocol ensures that the identity of the sender is verified before the server accepts the incoming data packet, preventing unauthorized access to the network.
Usage
Commonly paired with 'of' to specify the item sent, such as 'the sender of the letter'.