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Question

registering collaborator with complex email domain

  • April 6, 2026
  • 1 reply
  • 10 views
M

Hi there - I am trying to help a collaborator register for a box account. His email address has two dots in the domain name ( [removed by moderator] ) and entering this email address into the email address field on the sign up for a new account website gives an error message that reads “Email address is not valid”. Is there a way to register given this structure of his email address? thanks!

      1 reply

      Rona Box
      • Rona Box
      • Community Manager
      • April 28, 2026

      Hi ​@mwallace, 

      Welcome to Box Community, and we’ll assist for your colleague to successfully set up a Box account. 

       

      In general, an email with multiple domain levels can be valid, such as name@subdomain.company.com. So a domain containing more than one dot is not automatically invalid. If the Box sign-up page is rejecting it, the most likely explanations are:

      • there may be an actual formatting issue in the address
      • there may be hidden spaces or characters from copy/paste
      • the site validator may be rejecting that domain pattern
      • the domain itself may not be configured as expected

      Here are a few things you could try:

      • type the address manually instead of pasting it
      • check for any leading/trailing spaces
      • confirm the domain is real and can receive mail
      • try a different browser or an incognito/private window
      • if available, try another email address for comparison

      Hope it works! Let us know in this thread if you have additional question. 

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