urldecode tracked url query vars

Hi Max, thanks for the report. I’ll add it to next release.

Hi Max, I’m investigating about it and I’m not sure to apply this fix.
The add_query_arg gets a var from $_GET array and store it in $get_vars.
By default, php urldecodes $_GET vars and a double urldecode is dangerous: https://php.net/manual/en/function.urldecode.php#refsect1-function.urldecode-notes
Maybe is there a different configuration on your server? Can you try on another server to make a check?

Good one pointing that out, the problem may not be with reading the $emtrck but possibly with how it was created. I noticed you’re doing a urlencode inside the alo_em_make_url_trackable before passing it to add_query_arg. Is it possible double encoding is happening there? I’ve actually had this problem on both my live and local testing servers. Is it working on your server without modification?

For a long time there’ve been only a few reports on issues about broken links in newsletters, wrong redirects after following there links…
So I think there could be some issue about decode, charset or other configurations on the servers where thery are broken.
If you like you can send me a test newsletter including different links so I can view the live error: alo AT eventualo DOT net.

Can you disable temporary all other plugins and restore the default theme, then check the links? Maybe there could be something that causes the issue, just in case.