How to pass custom params to resend callback url?

[michalkvasnicak]

I would like to pass some extra information when signing in using Resend in order to store that on user profile when it is first created.

So far I tried cookies but now help. I also tried following in my server action:

export async function signUp(formData) {
   return await signIn('resend', formData, { myCustomParam: '...' });
}

But the resulting callback URL in the email does not contain myCustomParam and there is no way to get it.

Is there any way how to do so?

[rasulmv]

I know it's late, but I had the same question and for future googlers, you can pass the email directly like so:

await signIn('resend', {
    email: '[email protected]',
    redirectTo: '/lobby',
})

For some reason Typescript doesn't autocomplete the email property (at least on v5-beta version), but it's there; and passing it directly will allow to pass other params.