Google it first.
https://www.indeed.com/forum/gen/Job-Interviews/response-Indeed-Email/t486132
Hello everyone,
When employers reach out to you from your Indeed Resume, your email is masked – usually in the form of part actual email part random numbers @indeedemail.com – to protect your identity.
Once a reply is made to this initial email or you click ‘Interested’, only then will your actual email address be shown to the employer.
Furthermore, if you have concerns about the quality of a company that has contacted you through Indeed Resume or one that you have seen listed on our site, please contact us at http://www.indeed.com/support/contact.
For more information about safe searching, please visit this article on our Help Center:
go.indeed.com/CGK966
Take care,
Indeed Host
http://www.indeed.com/help