Please use the email address you registered with your sipgate account as your username:
If you're unable to login, try changing your login password (click here).
If you can't recall the email you used to sign-up with sipgate click this link for information.
We send your sipgate basic sign-up, voicemail and billing notifications to the same address as the one you registered with your account.
Have you checked all of the email accounts you regularly use for an email notification, or a sign up email from when you opened your account?