Custom hyperlinks are getting removed and not being saved in HTML editor TinyMCEIssue Custom hyperlinks that are pasted or typed onto the HTML Editor, TinyMCE, are getting removed and not being saved. For example: <a href="sip:test@test.com">Click here for email</a> is being saved as just: <a href="">Click here for email</a> CauseThe custom hyperlinks protocols are removed by the platform HTML sanitizer. By default, URL attributes like href and src support only these protocols: httphttpsmailtodataResolutionAdd the custom hyperlink protocol to the HTMLSanitizer script include. For example: HTML_WHITELIST : { urlAttributes: { “protocols" : [ "file", "sip" ] }, - - - - } In the above example shown on the screenshot the custom hyperlink protocol "sip" is added to the allow list which will prevent the HTML sanitizer from removing it when it's used in TinyMCE. Related LinksMore information regarding HTML Sanitizer