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If you are inviting a user who already has a Malomo login for another account, they must first click the link in their email invitation to log in with their existing credentials. Once logged in, they may switch accounts by clicking the Account tile in the top right corner.
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As a measure to help prevent accounts being created by malicious actors we maintain a block list of domains which cannot be used for email addresses when registering an account with Malomo. If you are receiving an error when trying to add a new user or having trouble, please reach out to us at help@gomalomo.com and we will assist.