Once the file has been successfully uploaded (and automatically scanned for viruses), Yahoo displays the attachment file name, and a green checkmark symbol next to it: Once you have found the file you want to send, double-click on it, and Yahoo Mail will start uploading it.Īs soon as you have chosen the file you want to attach, Yahoo Mail displays a progress bar at the bottom of the email editor, as shown on the screenshot. Click on the Attach button, and Yahoo will open a browse dialog that allows you to navigate through the files and folders on your computer to select an attachment to upload and attach to the current email. From the New Email Message tab that opened inside the browser window, notice an Attach button in the toolbar, right next to the Send button. Start by composing a new email, replying to an email, or forwarding an email, to get to the Yahoo Mail email editor. Add a file as email attachment in Yahoo Mail