How to set up or change email signature in Outlook on the Web (Office 365 and Exchange 2016/2019)?

How to set up or change email signature in Outlook on the Web (Office 365 and Exchange 2016/2019)?

How to set up or change email signature in Outlook on the Web (Office 365 and Exchange 2016)?

[Update]: This article was first published on March 15, 2016. It’s been updated to reflect the current steps required to set up an email signature on respective platforms.

Back in the day, when Exchange 2016 was released, OWA was replaced with a brand new and shiny Outlook on the web, known from Office 365 (or Microsoft 365, as the name also changed in the meantime). Since then, Outlook on the web went through some visual upgrades, but there wasn’t another name change (yet). What’s interesting is that despite the same name used for both on-premises (Exchange 2016 and Exchange 2019) and cloud environments, those Outlook versions are a bit different. Even though both clients are similar when it comes to setting up signatures, there are some noticeable differences. One of them is the path to the email signature editor.

Set up email signature in the cloud-based Outlook on the web

The layout of the email signature editor in the default Office 365 mail client is different, although, its functions are primarily the same as in the on-prem version of the client. Two additional buttons are present: format painter and quote.

  1. Log in to your Office 365 account and go to Outlook, or use the direct link.
    Mail option in the Office 365 top menu
  2. Next, open the Settings by clicking the gear icon in the top-right corner. Then, click View all Outlook settings at the bottom of the pop-up window:
    Accessing Office 365 Outlook on the web options
  3. Go to Mail > Compose and reply. Here, you can create or edit your email signature, and choose whether it should appear automatically in your new messages and replies/forwards respectively. If you leave both drop-down menus with their default values (No signature), you will have to add the signature manually when composing an email. The Settings window should also be accessible using this link.
    Outlook on the web email signature editor
  4. Instead of creating your signature from scratch, you can use the free email signature generator to quickly create a well-formatted email signature and paste it into the Outlook on the web’s signature editor.
    Outlook on the web Compose and reply
  5. After you finish setting up the signature, hit Save. The signature settings should be applied right away. Unlike the on-prem version, it is possible to create and use multiple signatures for a single mailbox – similarly to the Outlook desktop client. Just click the New signature button after you have saved your first signature to create another one.

Set up an email signature in Outlook on the web in Exchange 2016 or 2019

Outlook on the web looks a bit differently from its Microsoft 365 counterpart. Read on to see how to access the email signature settings and add or edit your Outlook on the web signature.

  1. Log in to your Outlook on the web account and go to the Mail app.
    Exchange 2016 - access Outlook on the web
  2. In Outlook on the web, go to settings (it’s a gear icon at the top right-corner of the screen) and click Options.
    Exchange 2016 OWA options
  3. On the left pane, go to Mail > Layout and select Email signature. Exchange 2016 OWA - Email signature editor
  4. To make the signature appear in every new email message, check the Automatically include my signature on new messages I compose box. There is also a corresponding option for replies and forwards available. Compose your email signature using available formatting tools. You can also create your signature with the free email signature generator and then paste it to Outlook on the web’s editor.
    Use available formatting tools to create your email signature in Outlook on the Web
  5. When your signature has been created, hit the Save button so that all changes take effect.
    Click the Save button to submit all changes in your email signature
  6. Back in your inbox in Outlook on the web, you can check if the settings were applied correctly. If you selected to have your signature added automatically, it should be applied at the bottom of your email when you create a new message.
    Click the New button to open a new email message in Outlook on the Web

That’s it! Now you do not have to waste time on creating a signature from scratch every time you write a new email. Your signature will already be there.

If you want to change your email signature, just follow the above steps again.

Admin has turned into skeleton, waiting for users to update their email signatures.

Central email signature management

While the method above is a quick and easy way to set email signatures in OWA, it has some drawbacks (see this article for more information on this topic). If you want to ensure that every mail is well-branded and includes all the details you require, you should manage email signatures centrally, from one place. See the links below to learn how to do this natively.

Limitations of the native email signatures solution

The native methods of central email signature management can help you unify email signatures in your organization. Sadly, this approach is still not perfect, as it lacks some significant features. To mention a few:

  • Placing the signature directly under the latest reply or forward,
  • Including inline images in email signatures (so that they do not show as attachments),
  • Viewing email signatures in the Sent Items folder,
  • Including individual users’ photos,
  • Removing empty lines from signatures (e.g. if a user misses an attribute)

If you are looking for a solution which overcomes all those limitations, you have to use a third-party tool, like CodeTwo Email Signatures 365 (for Microsoft 365) and CodeTwo Exchange Rules (for Exchange Server).

Suggested reading

Learn how to add social media buttons to your email signature.
Use CodeTwo Email Signatures to manage your Office 365 signatures centrally.

48 thoughts on “How to set up or change email signature in Outlook on the Web (Office 365 and Exchange 2016/2019)?

  1. Dt Rahul

    When HTML Email Signature copy from the browser and paste on the Microsoft Outlook Web. It breaks the line.
    please help me how to solve it.


    1. Kamil Glaser

      Is it an all-image email signature sliced into pieces? It is bound to break in most email clients, if not when you apply it, then when you send it. You could look into the HTML code and experiment with borders, padding and margins of each and every element, but it will be easier to go with a different design.

  2. Lauren White

    I have done everything you’ve said above and when I go into the settings my logo is there, but it doesn’t not apply to any emails.

    Any suggestions?

    1. Kamil Glaser

      To add the signature to emails, either select one of the Automatically include my signature… options and save changes, or choose More options > Insert signature while composing an email.

  3. Andy

    Thanks for this service

    It looks fine on your website but when I copy it the logo doesn’t appear in Office 365.

    ANy thoughts on how I remedy this ?


    1. Kamil Glaser

      Hi Andy,
      Thank you for mentioning you’ve run into a problem. Could you specify which template you are using and what is the image URL to the logo? Are other graphics (like social media icons) visible?

  4. Mark - MediaWorks

    How can I use HTML for a signature using Outlook on the Web?
    It always just shows the code as text instead of rendering the HTML.
    There is no option for entering code or file. It is just a WYSIWYG editor,

    1. Kamil Glaser

      Hi Mark,
      Currently, there is no way to paste HTML code directly to the Outlook on the Web’s signature editor. If you have HTML code which is not rendered, you can save it in an HTML file, open the file in a browser, copy the signature and, finally, paste it into the signature editor.

  5. Jennifer

    I have added my photo as a thumbnail to my signature, but it is huge. I am trying to just delete it from my signature and can’t seem to make it go away. How do I delete or resize my photo in my signature?

    1. Kamil Glaser

      Hi Jennifer,
      You can (and should) use a graphics editor to crop and resize your photo before adding it to the signature. Generally, people are not happy when they get a 1MB+ sized emails just because there is a photo in the email signature. The next step is to add width and height parameters to your img element in HTML. If you are not familiar with HTML code, you can use our free email signature generator, which will take care of the formatting for you.

  6. Yossi Aman

    Hi, we have a shared mailbox The signatures are defined in both (outlook + owa) but in the Internet mail (owa) the signature is not saved correctly. Is it possible to overcome this? If so – how?

  7. Adrienne

    I’m having trouble with OWA changing the size of the signature image. I have the images sized correctly, but when I add it by either pasting or inserting an image it gets very large and sometimes blurry. No matter how small I resize the image in an editing program OWA makes it huge in the signature box. I cannot resize within the signature box. Can you help me resolve this?

    1. Kamil Glaser

      Hi Adrienne,
      One way to resolve issues like that is to compose the signature in HTML with the right width and height tags and then copy the signature to OWA. You can use one of the signature templates from our free email signature generator to make this job easier.

  8. Kathy

    I am having an issue with inserting my logo and my social media buttons. I am copying it from my desktop Outlook and pasting into my boss’ O365 version but it does not work, it just shows as strange boxes in that spot. I tried the “insert hyperlink” suggestion above but that does absolutely nothing. Any suggestions?

    1. Kamil Glaser

      Hi Kathy,
      The Insert hyperlink option will not help you with graphics – it is used to add hyperlinks. If you copy the signature from Outlook signature editor, you might want to try copying the signature from an actual email. If this does not work, simply use the Insert pictures inline option in the OWA signature editor to replace those strange boxes with actual pictures.

  9. Christine

    When changing email signature the chosen formatting such as bold/italics/colours are not showing despite them being saved in settings? How do I fix this?

    1. Kamil Glaser

      To make sure I understand you correctly – in the signature editor, you can see all the formatting changes, whereas in the email message, you cannot? It might mean you are composing your messages in plain text format. Please check if there is the Switch to HTML option available under the More actions button.

  10. yazan

    Dear Sir
    Kindly note that i make my signature from other web and now its make big problem for me , i cant delete there signature due its automatically shown and even i make new outlook email its also show ,
    really i need your help , its make big problem to me with my boss

    1. Kamil Glaser

      Could you explain what you mean by “the other web”? If you are using Outlook and there is a signature which shows automatically, you should be able to turn it off in the settings. Go to File > Options > Mail > Signatures and turn the problematic signature off. If it is in OWA, follow the path in the article above and unmark the options which automatically add the signature. If neither of those solutions works, please specify which email client you use.

  11. Johan Beukelaers

    How can I insert a banner with a link to an intranet/internet page in the signature in outlook365. Simply copying it is not working.
    Thank you.

    1. Kamil Glaser

      Hello Johan,
      Do you mean that when you paste the banner it does not appear or that clicking the banner in a signature does not lead you to the page?
      If there is no link on the banner, highlight the banner and click the Insert hyperlink button and enter the URL of your choice.
      If the banner does not appear altogether, use the Insert picture option first, and then follow the step I mentioned above.

  12. annie

    I followed these instructions and it looks great on my end when I start a new email. When someone gets the email the photos come up as gibberish text making the body of the email extremely long.

    1. Kamil Glaser

      The easiest way would be to highlight a social icon the same way you would highlight a chunk of text. Then, click More > Insert hyperlink in the editor’s ribbon and insert links to the according social media profile. Repeat for the rest of icons and you are done. You can also use the email signature generator if the template you have chosen is also in the generator.

        1. Kamil Glaser

          Hi Tara,
          To create a link, click the Add hyperlink button and in the field in which you normally paste an URL, type mailto:YourEmailAddress for an email link and tel:YourNumber for a phone link.

    1. Kamil Glaser

      Hi Ross,
      Outlook on the Web lets you set up only one email signature at a time. To set up more, you can connect your account to Outlook.

  13. Michael

    In Office 365 webmail, can I use an automatic signature only sometimes when I choose, rather than “always when replying” or “always when composing”?

    1. Kamil Glaser

      Hi Michael,
      You can add the signature only sometimes if you like. To do so, do not check any of the options you mentioned. Then, while composing an email, click the symbol next to the discard button and choose Add a signature from the list. It is not automatic, but it will give you a chance to add the signature only when you want.

    1. Kamil Glaser

      Hi Marie,
      Do you mean an animated logo? If that is the case, add the logo the way you would add a standard picture. It is easiest done using the signature editor, like in the instructions above. Just click insert pictures inline and point to the location of your animated gif file.

  14. Scott

    What you said is correct Milena. I have the Windows 10 Mail app and adding images in the signature is not allowed. I don’t know why they removed such a nice feature.

    1. Milena Madej Post author

      Hi Göran,

      To set up a signature in Windows 10 Mail app, follow the steps below:

      1. In the Windows Mail app, go to Settings (the cog icon)>Options.
      2. Then, go to the Signature section where you can compose your email signature. Make sure the Use an email signature option is ON.
      3. Your signature should appear automatically while creating a new email message.

      However, as far as I know, the signature editor in Windows 10 Mail app does not allow formatting or adding images.

      Hope this helps!


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