Providing an email address will allow you to quickly retrieve your User ID or generate a new password online if you lose them. If you don’t provide an email address you can still get your User ID or password by post but this can take up to 14 days to arrive.
If you enter an email address, HM Revenue & Customs (HMRC) or the Government Gateway may also use this to contact you at a later date.
Please use the standard recognised format for email addresses, for example:
Please note: For security reasons HMRC do not use email to send any detailed personal or tax information.