Most of the other plugins wont support ssl our anonymiz MyBB plugin support with ssl all external links with or with out ssl links will redirect from your MyBB forum to hide reefer
Webmasters can use this tool to prevent their site from appearing in the server logs of referred pages as referrer. The operators of the referred pages cannot see where their visitors come from any more. Using the referrer removal service is quite easy: https://www.anonymiz.com/?https://www.google.com/ produces an anonymous link to google.com which prevents the original site from appearing as a referrer in the logfiles of the referred page.
Is this free?
Yes, this plugin and the anonymiz.com service are free to use
Step 1: upload the Plugin File
Log in to your hosting space and upload the plugin to MyBB rootpath-> inc -> plugin directory.
Step 2: ACP Setup
Login to the Admin CP, visit the Home tab -> Configuration pageand click on the Plugins tab and activate link anonymizer plugin.
Done All your site External link with ssl or without ssl are now anonymized with this plugin.