I have a requeriment in my app, that i already have the phone number or email of user, and a api to send sms or emails, so what i need is a way to get a login link fron Auth0 and send it to the user without to ask the users to introduce them selve the phone number or email
Is that possible and secure? how can i acomplish that aproach?
Hey @jesus.rodrz97! Welcome to the community! 
Let’s see what we can do here.
Here’s one idea, for invite-only signup flow:
Another option (in case invite-only signup is not something you’re looking to implement), you could try the usual passwordless route. In this case, you form a request to passwordless endpoint, providing user email and other details, and they will receive a link to login without any prompts.
https://auth0.com/docs/api/authentication#passwordless
Please let me know if you need any further details.
Cheers!
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