Adding a contact to the phone from an email message?

Question

HTML

The question is how to implement adding a contact to the phone contacts (ios / android) when clicking on the add to contacts button (see screenshot).
The block itself was made up through hcard, it looks good, but I can’t figure out how to add an action to add to contacts. I tried to fasten a link to the vcard to the button, but this is not it. first, the browser opens, the file is loaded, then you need to open this file ... with utair, this is done in 1 click. There is no source for the utair letter.

Answer 1

try to create a vCard file with the .vcf extension and send it as an attachment in the letter
https://ru.wikipedia.org/wiki/VCard

Mime type:
text/x-vcard , application/vcard (Macintosh only) , text/anytext , text/directory , application/x-versit (Eudora Plug-in) , text/x-versit (Eudora Plug-in) , text/x-vcalendar