Cashier: Currency presentment on checkout session

[endel]

Hi everybody,

In order to support multiple currencies on Stripe, I'm looking to use the "currency presentment" feature by passing +location_XX on the customer's email address, as documented here: https://stripe.com/docs/payments/checkout/present-local-currencies?platform=automatic-currency-conversion#test-currency-presentment

Background: I'm building a SaaS and would like to accept payments worldwide, but Stripe refuses to accept a Brazilian (BRL) credit card if the currency is displayed in USD.

I've had two unsuccessful attempts so far:

1. Provide "customer_email" to checkout:

$subscription->checkout([
  'success_url' => url('dashboard'),
  'cancel_url' => url('application/new'),
  'customer_email' => "[email protected]"
])

Results in this error: You may only specify one of these parameters: customer, customer_email.

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2. Pass as customer options:

$checkout = $subscription->checkout([
    'success_url' => url('dashboard'),
    'cancel_url' => url('application/new'),
], [
    'customer_email' => "[email protected]"
]);

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Is this something achievable? I'd appreciate it if anybody has some experience to share regarding multiple currencies!