Firebase Invites - Send invitation via email with HTML

MainActivity.java

Intent intent = new AppInviteInvitation.IntentBuilder("Send App Invitation")
    .setMessage("Special season for this app is starting now, try it and get 100 baht")
    .setDeepLink(Uri.parse("http://example.com/offer/100_baht"))
    .setEmailHtmlContent("<a href='%%APPINVITE_LINK_PLACEHOLDER%%'><h1>Check it out here!</h1><img src='https://appjoy.org/wp-content/uploads/2016/06/firebase-invites-logo.png'></a>")
    .setEmailSubject("Firebase Invites want to give you 100 baht")
    .build();
startActivityForResult(intent, REQUEST_INVITE);