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Advanced Disclaimer Content Control
CodeTwo Exchange Rules 2003 features a built-in capability to process RT (Remove Text) control tags. RT control tags are exceptionally useful when creating personalized disclaimers including Active Directory placeholders. If the placeholders within a disclaimer cannot be filled with values as the corresponding data is missing from Active Directory, the redundant disclaimer element marked by control tags will be automatically removed. Example:

Sample signature template without RT control tags: Final signature without RT control tags as seen by the recipient:
-- 
Regards,
[First name] [Last name]
Phone: [Phone]
Mobile: [Mobile]
E-mail: [E-mail]
---------------------------------
Consider the natural environment 
before printing this e-mail.
---------------------------------
-- 
Regards,
John Doe
Phone: +48 75 646 1001
Mobile:
E-mail: john.doe@codetwo.com
---------------------------------
Consider the natural environment 
before printing this e-mail.
---------------------------------


As you can see, there is a redundant line in the final signature, which includes an introductory word signaling a mobile phone entry. The number, however, is missing from Active Directory and this is why the line does not contain any value. What we want to do is get rid of the line completely. This can be achieved using RT (Remove Text) control tags.

Example of correct usage of RT control tags and the end-result:

Sample signature template including RT control tags: Final signature with RT control tags as seen by the recipient:
-- 
Regards,
[First name] [Last name]
Phone: [Phone]
{rt}Mobile: [Mobile]{/rt}
E-mail: [E-mail]
---------------------------------
Consider the natural environment 
before printing this e-mail.
---------------------------------
-- 
Regards,
John Doe
Phone: +48 75 646 1001
E-mail: john.doe@codetwo.com
---------------------------------
Consider the natural environment 
before printing this e-mail.
---------------------------------


The line including [mobile] placeholder, which has been replaced with an empty value from Active Directory, has been removed.

The number of RT control tags (pairs) you can use in a single line is not limited to one. However, it is important to use them appropriately. They cannot be nested.

Below an example of correct usage of RT control tags:
correct usage of RT control tags
Below an example of incorrect (nested) usage of RT control tags:
incorrect (nested) usage of RT control tags

The RT control tags can be found in the signature editor's ribbon (Fig. 1).

Remove text tag button in the editor's ribbon.
Fig.1. Remove text tag button in the editor's ribbon.


See also:
How to have parts of disclaimers/signatures removed on the fly when they have not been replaced by data from Active Directory