Click OK in the Signatures and Stationery dialog box.To have the signature included on replies and forwards, select the signature from the Replies/forwards drop-down list.From the New messages drop-down list, select the signature that you created.In the Signatures and Stationery dialog box, on the E-mail Signature tab, in the Choose default signature section, from the E-mail account drop-down list, select an account with which you want to associate the signature.Select Signatures from the drop-down list.From the Message Ribbon, select the Insert tab, and from the Include group, select Signature. This feature works the same in all modern versions of Microsoft Outlook: 2010, 2013, and 2016. Set up Outlook to automatically attach the signature to all outgoing mail by following these seven steps. How to Automatically Add a Signature to Messages in Microsoft Outlook See Microsoft Outlook: Tips and Tricks for similar articles.Ĭreating your signature does not automatically add it to your email messages.