Skip to main contentAurum is free to integrate and use. The email wallet is provided by Coinbase, which offers a free tier and charges only if your usage goes beyond those limits.
Coinbase Embedded Wallets
Email authentication is powered by Coinbase Embedded Wallets. Usage for this is billed through your project ID, which you can manage in your Coinbase Developer Portal. See pricing details here. Email login can be disabled, in which case this cost does not apply. 
