Follow the steps below to add your Yahoo account to Canary Mail:
1) Open Canary.
3) Click the Add Account button and Select Yahoo.
4) Enter your Yahoo e-mail address. Doing so will open Yahoo’s authentication page so you can sign into your Yahoo account in Canary Mail for your Windows Device.
5) Click Next
6) Enter your Yahoo password.
7) Then, click on the blue ‘Agree’ button to grant Canary Mail access to your email account, so you can use your Yahoo within Canary.
8) When redirected to Canary, enter an arbitrary Account Name. This is how Canary will identify the account.
9) Enter your Name, as you would like message recipients to see it in your messages’ From field.
10) Click continue.