Yahoo Mail (web) supports HTML signatures. You paste the rendered signature into the signature box.
Step 1 — Create and download your signature
- Design and save your signature in Mirosign.
- Click Download HTML, open the file in Chrome, Edge or Firefox, select it all (Ctrl/Cmd + A) and copy (Ctrl/Cmd + C).
Step 2 — Open the Yahoo signature settings
- In Yahoo Mail, click the Settings gear (top right), then More settings.
- Select Writing email from the left menu.
- Switch Signature on for your Yahoo email address.
Step 3 — Paste your signature
Click in the signature box and paste (Ctrl/Cmd + V). Then click Compose to send yourself a test email.