URL Rewriting when sending email

Hello,

I’m testing your plugin and it sounds great.
But when I receive an email that I created, all the URL in the mail change. So, when I click on a link in the email :

I have something like http://www.example.com/c/1-3-1-e and normally I want something like http://www.example.com/?p=123.

How can I fix that ?

Thanks a lot for your help.

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