Add an email signature to Outlook (step-by-step)
Below are quick, picture-guided steps for each Outlook version. Pick the one that matches your screen.
1) Classic Outlook for Windows (desktop app)
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Open Outlook → File → Options.
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Choose Mail → Signatures….
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In E-mail Signature, click New, name it, and create your signature in Edit signature.
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Under Choose default signature, set which signature to use for New messages and Replies/forwards.
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Click Save → OK.
2) New Outlook for Windows & Outlook on the Web (Microsoft 365 / Outlook.com)
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Click the Settings ⚙️ (top right).
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Go to:
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Accounts → Signatures (newer menu), or
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Mail → Compose and reply (older menu label).
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Click + New signature, give it a name, then design it in the editor.
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In Select default signatures, choose the signature for New messages and Replies/forwards.
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Click Save.
3) Outlook for Mac
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In the menu bar, click Outlook → Settings.
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Under Email, choose Signatures.
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Click + to add a signature, name it, and compose it.
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Use Choose default signature to set the signature for each account (new messages and replies/forwards).
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Close the window to save.
Tips (all versions)
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Insert manually (one-off): When composing, choose Signature on the toolbar/ribbon and pick the one you want.
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Logos & links: You can paste images and add hyperlinks in the signature editor (works best in the new Outlook & web editor).
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Multiple accounts: Set defaults per account if you use more than one mailbox.
