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A left rail of saved signatures and default pickers beside a main pane with a formatting toolbar, source editor, and rendered message preview.
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Signature Editor is the signature settings panel for avery@acme.com. A left rail lists three saved signatures, Work default, Short reply, and Personal, with the active one highlighted, then a Signature defaults block that picks which one runs for new messages and for replies or forwards. The main pane opens with a formatting toolbar, holds the signature source in an editable area, and ends with a rendered preview framed as the tail of an outgoing message.
The signature list and defaults are typed const arrays, and the active flag drives the highlighted row. The toolbar buttons and defaults pickers are presentational, and the footer pairs Discard with Save signature.
Reach for this block on the signature or identity section of mail settings, wired to your signature API. The textarea holds demo content; load the saved source, persist on Save signature, and wire the defaults pickers to your assignment endpoint.
A natural flow around it on an Application Pro page:
Before
After
One strong use is the personal mail signature editor. Other signature surfaces:
Tip: the live preview under the editor is what sells the block, since users judge a signature by how it looks in a message, not by its source.