Hi Ashish,
And thanks!
I tried using the query string to be honest. However, the entire string including utm_campaign, elqID... the query string is too long and do not fit the valu characters number restriction...
But thanks to you I thought about using the utm_campaign value which is different for the two emails! I will try that (I just don't know if I should put the value with blank spaces or with %)!
Many thanks,
Luc