When sending out surveys via SMS and email, it can provide reassurance to recipients if the address is associated with your domain. For example, if your company typically uses the domain example.com, it may be reassuring for links to go there rather than directly to quicksearch.se or fdbck.se - especially when the links are visible, as they are in SMS messages.
To set up a vanity URL for the domain example.com, you can redirect links that lead to the website with the format /u******** and /s********, and then make redirects to the corresponding address on Quicksearch's short domain https://fdbck.se/
Example:
Requests to https://example.com/u******** are redirected to https://fdbck.se/u*********
Requests to https://example.com/s******** are redirected to https://fdbck.se/s*********
Solution for .htaccess
RewriteEngine on
#All links starting with s start survey
RewriteRule ^s(.*) https://fdbck.se/$1 [R=301,L]
#All links starting with u send to unsubscribe
RewriteRule ^u(.*) https://fdbck.se/$1 [R=301,L]
To use the address in the campaign:
Link to start the survey: https://example.com/s#recipients_code#
Link to unsubscribe: https://example.com/u#recipients_code#