zulip/templates/zerver/help/enable-or-disable-pressing-enter-to-send.md

Enable or disable Press Enter to send

Zulip supports configuring whether the Enter key on your keyboard sends a message that you are composing.

By default, the Enter (or Return) key simply adds a blank line to the message when the Press Enter to send checkbox is disabled. This is great if you want to write multi-line messages that include blank lines, which is much more common in Zulip than in other chat products.

However, if you check the Press Enter to send checkbox in the compose box, Zulip sends your message when you press Enter (or Return) on your keyboard.

Whether or not the Press Enter to send option is enabled, pressing Ctrl + Enter or Tab then Enter sends a message, while pressing Shift + Enter inserts a new line in your message.