How to add an email signature in Outlook Online

Microsoft's web-based browser version of their popular Outlook email client goes by many names. You may also know it as Outlook Online,, Outlook Live, Outlook 365 Online, or simply Outlook for Web. It is part of the Office 365 suite of tools that Microsoft offers. It features a nice suite of features to manage email signatures to your email communication and even includes the ability managing multiple signatures.

By default the editor is pretty basic for what many people want out of their signature. If you want to make something more advanced, we would recommend using a tool like our email signature generator. This tool allows you to choose from a set of starting templates and customize them by changing fonts, colors, images and adding additional fields. It creates the HTML code for you so you don't even have to worry about it!

Here is a step by step process of how to add your email signature to Outlook Online. This guide assumes you have already copied your email signature to your clipboard using an editor like, from an email, or from another source.

  1. Open the Outlook Online website. Click on the Settings gear near the top right.

    add signature to outlook online step 1

  2. In the left hand menu, click the Compose and Reply option in the sub-menu under Mail.

    add signature to outlook online step 2

  3. Click New Signature to start with a fresh email signature.

    add signature to outlook online step 3

  4. Give your email signature a name.

    add signature to outlook online step 4

  5. In the signature editor box click in it and Paste your signature.

    On Windows you can press Ctrl + V. On a Mac you can press Command + V. You can also often right click and find the Paste option in the menu.

    add signature to outlook online step 5

  6. Now Save your signature by clicking the blue button near the bottom right.

    add signature to outlook online step 6

  7. You can optionally choose when you want your new signature to be used by default. For New Messages, and/or for Replies & Forwards.

    Then you will need to click Save again.

    add signature to outlook online step 7

  8. When composing a new email message, your new signature will now appear.

    You can also switch to a different signature if you would like by clicking on the three dots menu while composing an email, going to Insert Signature and selecting from your list of available signatures

    add signature to outlook online step 8

That's it, you are finished! You are now a pro at managing signatures for Outlook 365 Online. If you have additional questions please don’t hesitate to reach out and let me know! You may also want to check out my beginners guide on creating email signatures.

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