This article explains how to automatically add email signatures/disclaimers in Exchange 2010 using Transport Rules.

For many organizations, it’s a good idea to centrally manage email signatures and email disclaimers – it gives a consistent branding on your email communications, and you’re not relying on end users to set them up correctly and keep them consistent. If you’re running Microsoft Exchange 2010, you have the ability to do this out of the box, using ‘Transport Rules’. Applying signatures this way should also save you space in your mailbox databases, due to the fact that signatures won’t be added on to each message in every users "Sent Items" folder.

Exchange email signatures - New transport rule - Append disclaimer text

To get started with a basic signature, open the Exchange Management Console, and navigate to: ‘Organization Configuration’ >> ‘Hub Transport’, then select the ‘Transport Rules’ tab, finally click the ‘New Transport Rule’ link in the actions pane on the right. The Transport Rule wizard should then start, you’ll need to provide a name for your rule, and then select which user or group of users this rule should apply to. In your first instance, it’s probably a good idea just to apply it to yourself to test with, later you can apply the rule to other individuals, distribution groups  etc. Have a look through the options available to you in step 1, they are quite flexible with who the rules can be applied to. In step two of the transport rule wizard, you will need to chose the ‘append disclaimer text’ action, and then enter your text by clicking the appropriate hyperlink in the bottom pane of the wizard.

Exchange email signatures - New transport rule - Except replies

Before we move on to step 3 of the wizard, you should be aware that signatures and disclaimers can only be appended to the absolute end of emails. If you want to have a signature at the end of each reply, you will need to look into 3rd party solutions. Due to this fact, I always add an exclusion rule, for any email with ‘FW:’ or ‘RE:’ in the subject, in order to prevent a build up of signatures right at the end of an email conversation, which could confuse people. Once you’ve added this exclusion rule, the wizard will confirm your choices, and then create the transport rule. At this stage, if you send an email that matches the criteria in step 1 of the wizard, you should see your signature applied.

Dynamic email signatures

The best aspect of adding signatures via Exchange transport rules is the fact that certain attributes from Active Directory can be dynamically inserted into the signatures – just insert the attribute name into the disclaimer text in the transport rule, with ‘%%’ on either side of the attribute name (e.g. %phoneNumber%). Unfortunately not all AD attributes will work, but there are a number of useful ones available, the full list is provided on Microsoft TechNet.

For our next signature, go back and edit the previous transport rule you created, and edit the disclaimer text to include some dynamic attributes. We will also need to add some very basic HTML to format the signature:

Exchange email signatures - Specify disclaimer text Now when a mail matching our criteria is processed by Exchange, it should have our name added in bold, along with our phone number. You could get more creative with the HTML in the signature, inserting company logos, or creating tables.

Text only email signatures

If you’re sending a text only email (Many mobile devices will send these out – including iPhones and Blackberries), Exchange will have to convert your signature to a text only format. It’s always a good idea to check what the converted version looks like – especially if you’ve used a lot of HTML.

It’s also worth noting that a bug in pre SP1 meant that when Exchange converted HTML messages to text only, the signature ended up with <html> and <body> tags at the start of it. This issue was fixed in Exchange SP1.

Chaining email signatures

Finally, as you build your signature system up for your organization – it may help to be aware that you can create multiple transport rules that build up your signature and disclaimer in chunks. For example, one rule could include generic name and contact details, followed by another section with a departmental marketing line, followed by a global disclaimer message. By setting the priority of each transport rule, you can ensure that they will be joined together in the correct order.

  1. Avatar
    Steve 13 years ago

    Is is possible somehow with this functionality to >block< the use of stationary?

  2. Avatar
    Geoff Kendal 13 years ago

    I can’t see an easy way of doing this unless maybe the stationary adds an additional email header.

    Take a look at this article about disabling stationary from the Outlook client:

  3. Avatar
    Steve 13 years ago

    Thanks Geoff.

  4. Avatar
    Don 11 years ago

    Steve and Geoff. you turn off the ability for stationary in the Group Policy. its the same Group Policy used to prevent users from using their own signature.

  5. Avatar
    Clint 11 years ago

    Is there a way for the signature to show at the bottom while composing an email using this method, similar to how it shows up if using a sig file in outlook?

  6. Avatar
    ann abraham 11 years ago

    I have find this website very useful. I have an issue, from a file if I rightclick and select send to mail recipient, my email signature is coming as just a message. My email signature contains a hyperlink and it is showing as the link itself. But if I send attachments from my outlook itself, my email signature is coming properly. How can I resolve the issue.

  7. Avatar Author
    Geoff Kendal 11 years ago

    Hi Ann,

    The only thing I can think of is the ‘fallback’ option in the transport rule.

  8. Avatar
    Sinan 10 years ago

    I have an issue too. Our signature did not work on reply. When reply a message signature comes at the bottom of the message. how can I the signature positioning under my reply.

  9. Avatar Author
    Geoff Kendal 10 years ago


    We can only append at the end of the email, this is why I exclude FW and RE subjects in my example. You can’t do what you’re attempting with an Exchange transport rule.

  10. Avatar
    Kris 9 years ago

    How would we do this then? Are you saying it is impossible completely or does every organization not include their signature after each reply? Dell does this.. Thanks for the help though your the man.

  11. Avatar
    Par 9 years ago


    This is working just fine for me to have a automatic signature with Company logo and Active directory fields, except that all signatures will be placed at bottom of every E-mail, Only the first new E-mail will be correct but if I reply 10 times I have 10 signatures at the bottom. Is there a way to have the signature inserted after my reply?

    Any ideas?

  12. Avatar
    Dennis 9 years ago

    Would it be possible to have optional elements in the (chained) signature? For example, I only want to add the line for the mobile number if that number has been entered in AD.

    Any ideas?

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