I would like to know if there is any keyboard shortcut to attach a file when writing an email.
Most of the shortcuts can be found here, but they do not include any for this task.
There's no a specific shortcut, however, while composing the body of the email, hit Tab three times. (The first hit moves you to the
SEND button, the second one moves you to the
Schedule Send arrow, and the third one takes you to the clip icon for attachments.) Bam! Now you're able to paste the path for your attachment.
CTRL + O is the shortcut key for Attachment in gmail.