How to Use a Different Signature for Each Email Account in Apple Mail
Work email deserves the full professional signature; your personal address doesn't need your job title. Apple Mail handles per-account signatures well — once you know the assignment model.
Step by step
Understand the model
In Mail → Settings → Signatures, the LEFT column lists your accounts plus “All Signatures.” A signature only appears for an account it's been assigned (dragged) to.
Create each signature
Select the account → click + → name it clearly (“Work — full”, “Personal — short”). Creating it under the account assigns it automatically.
Set each account's default
With an account selected, the Choose Signature dropdown at the bottom sets what's auto-applied. “In sequential order” / “At random” exist for multiple signatures — most people want one fixed default per account.
Switch per-message when needed
In any compose window, the Signature dropdown (next to From) overrides the default for that one email.
Mind the From address
The signature follows the account you're SENDING from — if you have aliases on one account, they share that account's signatures. Separate accounts = separate signatures.
Multiple designed signatures, no pain
Building several polished signatures (one per business, per role) is where manual methods get tedious — Autograph's library holds them all, each a one-click install to its account.
A library for all your signatures
Keep every account's signature designed and ready in Autograph — each installs to Apple Mail in one click, and your iPhone gets them via QR.
Download Autograph free See the templatesCommon questions
Can two accounts share one signature?
Yes — create it under All Signatures and drag it onto both accounts. Edits apply everywhere it's assigned.
Why is the signature missing when I compose?
You're composing from an account the signature isn't assigned to, or that account's Choose Signature default is None.
Do per-account signatures sync to my iPhone?
No — iPhone keeps its own per-account signatures (Settings → Apps → Mail → Signature → Per Account). Set them there; the QR flow works per signature.