mailto: links are broken for a lot of people since they were invented in the days of desktop e-mail clients, not webmail. Not to mention that even when they wo

mailto: links are broken for a lot of people since they were invented in the days of desktop e-mail clients, not webmail. Not to mention that even when they work, they might open in the wrong client -- e.g. your personal email when you need to send from your work email. And when they don't work, you have to manually copy and paste the address and then manually copy and paste the code and it's a huge drag. Also now you have to handle people spoofing email addresses, which means you can't include users sending emails without certain security verifications. It's better UX as well as more secure the way it's done now.