submitUrl property
An optional field containing a URL where the client must submit the
validation token to, with identical parameters to the Identity Service
API's POST /validate/email/submitToken endpoint (without the requirement
for an access token). The homeserver must send this token to the user (if
applicable), who should then be prompted to provide it to the client.
If this field is not present, the client can assume that verification
will happen without the client's involvement provided the homeserver
advertises this specification version in the /versions response
(ie: r0.5.0).
Implementation
Uri? submitUrl;