Most SaaS require to verify email upon signup. You receive an email and need to click to validate your signup.
It adds friction but is better for safety.
Do you use it for your products or not ?
No, as you mentioned, it creates friction. Since we are in the early stages, we haven’t enabled this option in our product yet. But , I believe that as our product and customer base grow, it will be valid to add such an option to protect the product from harmful attacks.