This is the 12027th most frequent Turkish word.
gönderdiğimiz
"Gönderdiğimiz" means "that we sent" or "which we sent" in English.
In this sentence, "gönderdiğimiz" is a participle form indicating the files were sent by us. It functions as an adjective modifying "dosyalar" (files).
Gönderdiğimiz dosyalar henüz ulaştı mı?
Have the files we sent arrived yet?
Here, "gönderdiğimiz" describes the specific letter that was sent. It connects the action performed in the past to the object (letter).
Gönderdiğimiz mektubu alıp okumayı unutma.
Don't forget to take and read the letter we sent.
In this usage, "gönderdiğimiz" again describes the gifts sent by us, indicating possession and past action.