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To create an email signature:
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For Entourage users, click on the Tools menu item, scroll down to Signatures and click on the + to add a new signature. Title and type in your new signature, and either close and save or select Save under the File menu. Check the box for the default signature you'd like to appear on your outgoing email.
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Open a new email and click on the Insert menu item, scroll down to
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Signature in the tool bar. From within the
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drop-down window, click on the Signatures button. Click on the New button to create a new signature; title and type in your new signature, and click on the Ok button to save this signature.
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You can edit the ‘Choose default signature’ fields if you would like this signature to appear on
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all new messages and replies/forwards.