# Joining Webinar from Windows SDK, asks for user email. **URL:** \ **Category:** Windows\ **Created:** [August 1, 2018, 12:42pm UTC](https://devforum.zoom.us/t/joining-webinar-from-windows-sdk-asks-for-user-email/1560 "2018-08-01T12:42:37Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![11111](https://avatars.discourse-cdn.com/v4/letter/1/73ab20/32.png) [@11111](https://devforum.zoom.us/u/11111)\ **Post date:** [August 1, 2018, 12:42pm UTC](https://devforum.zoom.us/t/joining-webinar-from-windows-sdk-asks-for-user-email/1560/1 "2018-08-01T12:42:37Z")
I don’t want my users to be prompted for entering their Email while joining a Webinar. How do I set the value of email internally using MeetingOptions?  The window says “Finish Registration to Join the webinar”  I want to get rid of that By setting the default value for both email and display name. Also, can someone explain what is Webinar Token and why it is used? ---
**Author:** ![dats\_liao](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/dats_liao/32/464_2.png) [@dats\_liao](https://devforum.zoom.us/u/dats_liao)\ **Post date:** [August 2, 2018, 1:20am UTC](https://devforum.zoom.us/t/joining-webinar-from-windows-sdk-asks-for-user-email/1560/2 "2018-08-02T01:20:37Z")
hi, 1\>if you want to prepopulate the email and user name when join webinar as attendee please call ZOOM\_SDK\_NAMESPACE.IMeetingConfiguration.PrePopulateWebinarRegistrationInfo this api before join meeting 2\>webinar token is for join the webinar as panelist regards dats ---
**Author:** ![DeveloperBot](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/developerbot/32/12632_2.png) [@DeveloperBot](https://devforum.zoom.us/u/DeveloperBot)\ **Post date:** [August 21, 2020, 5:51pm UTC](https://devforum.zoom.us/t/joining-webinar-from-windows-sdk-asks-for-user-email/1560/3 "2020-08-21T17:51:44Z")
Closed on August 21, 2020, 5:51pm UTC