Classic Sidebar & Ad Blocker for Yahoo Mail

Every linked Yahoo Mail mailbox back in one sidebar, folder layouts, instant switching, and no ads or sponsored offers.

Bring back the classic Yahoo Mail layout. If you link several addresses (Gmail, Outlook, other Yahoo accounts) to one Yahoo Mail account, every mailbox appears in the left sidebar with its own unread count, just like Yahoo used to. No more hovering over a menu at the bottom to find them. **Every mailbox at a glance** • Every linked mailbox listed in the sidebar, with live unread counts • Instant switching between mailboxes and folders, with no page reloads • Opens straight into your layout on refresh, with no flash of the default view **Built-in ad blocker** • Removes sponsored messages from your inbox before they appear, so the list never jumps • Hides "Offers for you" deal strips that appear above some emails • Hides the right-hand ad rail and upgrade prompts **Your layout, your way** • Folders as a tree under the open mailbox, a second column, or a toolbar • Slim, Default or Wide sidebar, and a compact avatar strip when collapsed • Optionally hide the category bar (Primary, Offers, Social, Newsletters) • Follows Yahoo Mail's own light and dark themes, popup included **Per-mailbox controls** • Hide mailboxes you rarely use and pick an avatar color • Edit a mailbox's name, description and reply-to address without leaving your inbox Everything runs inside your browser. The extension doesn't collect, store or send your email or personal data anywhere. It only rearranges Yahoo Mail's own page, using Yahoo Mail data that is already loaded in your tab. This is an independent project and is not affiliated with, endorsed by or sponsored by Yahoo. What's new 1.8.9 • "Copy text" button on every open email: copies just what you see (subject, sender, date and the message text). Shift-click copies the raw source with all headers 1.8.8 • New option: hide the streak button, "Your streak" and Yahoo Mail Plus upgrade prompts 1.8.7 • Select-all with the All / None / Starred / Unstarred menu now appears in every folder • Select-all matches Yahoo's own style, with tighter spacing • Select-all shows immediately when switching folders (e.g. Sent) 1.8.6 • Folder chips stay visible in Unread and Starred • Blocks more Yahoo tracking beacons when opening emails 1.8.4 • Select-all is always visible • Archive, Delete and other actions appear right next to "N selected" • No more white flash when opening emails in dark mode 1.8.2 • Emails open faster • Sidebar and popup switch instantly with Yahoo's light/dark theme • New option: keep mailbox settings preloaded for instant opening 1.8.1 • No flash of the old layout when the page loads • Collapsed sidebar: click the open mailbox to show or hide its folders 1.8.0 • Hides Yahoo's "Offers for you" deal strips inside emails