Does anyone know why AMPscript variables won't work in the preheader? They will resolve in the send preview, but once the email is delivered they are blank.
If I use the same variables in both the subject line and preheader, the subject line variables resolve but the preheader variables do not once the email is delivered. This does not make sense to me and seems like a bug in SFMC. Wondering if anyone has a solution or work around.
These are ampscript variables... so the syntax is like this:
This is my variable: %%=v(@var)=%%
@varbefore assigning it? E.g.
var @var set @var = "whee".