Nextstart uses NextAuth to authenticate users. You can configure it in the /app/api/auth/[...nextauth]/route.ts file.
Setup
Step 1
If you haven't done it yet, add this to your .env.local
.env.local
NEXTAUTH_URL=http://localhost:3000
NEXTAUTH_SECRET=ybcbjukkkmcrte22c //(you can put anything here not less than 10 characters)Step 2
If you haven't set up sending/receiving emails,do it first
Step 3
In config.ts file, add an from field to mailgun.fromNoReply (usually noreply@mail.yourdomain.com)