Overview

You are setting up newsletters with personalized signatures. You are using some custom attribute (e.g. called 'DSM') in dynamic content queries which could have Umlaut (German names). You created a switch function in your custom enhancer in the master list. The function includes several IF statements looking for the 'DSM' names and entering the respective signatures.
​The function works fine with the 'DSM' that does not include Umlaut. But as soon as the DSM contains ä,ö, ü, é etc. it doesn't find the name in the switch function and enters the default ELSE signature. 

Example of IF statement with Umlaut in DSM attribute: [%% IF %%DSM$$ = "Emme André" %%]

Solution

1. Copy your custom enhancer from the master list.
2. Use copied enhancer in your message or create a new message in the same list which only has copied enhancer.

Note: Messages with Umlaut characters display correctly in Outlook only if you use 'western European (windows)' encoding in ACM or LHQ.