How can I do to use my own email in the OTP that is sent, I saw that it can be configured from the Custom Email area but I do not know where to get that info, I saw a service called resend but I do not know services where I can link the emails of my domain do you know, recommendations?
You should be looking for an SMTP Email provider, we do not provide it as thats something that you really depends on what you need for your environment.