Keyboard shortcuts in Messages on Mac

Open Messages preferences

Command-Comma (,)

Hide Messages

Command-H

Hide everything except Messages

Option-Command-H

Quit Messages

Command-Q

Start a new message

Command-N

Open the Messages window

Command-0

Close the Messages window

Command-W

Print the conversation

Command-P

Search all conversations for matching text

Command-F

Clear the transcript (delete a conversation without closing it)

Option-Command-K

Open the Emoji & Symbols window

Control-Command-Space

Minimise a window

Command-M

Minimise all windows

Option-Command-M

Enter full-screen view

Control-Command-F

Make the text bigger

Command-Plus Sign (+)

Make the text smaller

Command-Minus Sign (–)

Insert a line break (in a message)

Option-Return

Copy the selected text

Command-C

Paste copied text

Command-V

Open the Spelling and Grammar window

Shift-Command-Colon (:)

Check the text field for spelling and grammar issues

Command-Semicolon (;)

Reply to the last message in a conversation

Command-R

Add a Tapback to the last message in a conversation

Command-T, then press 1 to 6 for the Tapback you want

Select the next conversation

Control-Tab

Select the previous conversation

Control-Shift-Tab

Open the conversation Details view

Command-I

Open the Contact card for the conversation recipient

Option-Command-B

Send an email to a selected person in the conversation

Option-Command-E

Show video effects (while in a video call in Messages)

Shift-Command-E

Show the selected image in the Quick Look window

Space

Delete a single message

Delete (first, select the message)