Newsletter previews display

Hello,
I have created a nawsletter and tested its display with Outlook. As I can chose to have a previews display with 0, 1 or 2 lines of the mail, I can see that the first line displayed is like this :
<http://www.mysitename.com/?email_id=18&user_id=26 …>
Is there a way to avoid displaying this kind of info as this is not relevant for the user to whom you are sending the newsletter.
Regards
Pat

https://wordpress.org/plugins/wysija-newsletters/