Inbox Tray emoji is a picture, which serves as an icon for email inbox on some platforms (in this sense, its opposite icon is 📤 Outbox Tray emoji). So, this emoji is often used exactly in the context of email and text messages. Apart from these, it also often appears in the context of business and offices. It may symbolize working with documents, correspondence, and so on.
Examples of using
“I’m almost finished with the documents 📥”
“I’m reading all these business letters 📥”
How to type