These web "devs" should know that GET is idempotent and you shouldn't create magic links that work with a GET request.
Also, Bingbot visiting your site does not mean that the link will end up in search results. They probably haven't bothered changing the user agent string for the bot that crawls links in emails.
Also, Bingbot visiting your site does not mean that the link will end up in search results. They probably haven't bothered changing the user agent string for the bot that crawls links in emails.