# `Stripe.Params.SourceUpdateParams.Mandate.Acceptance.Offline`
[🔗](https://github.com/jeffhuen/tiger_stripe/blob/main/lib/stripe/params/source_update_params.ex#L66)

Nested parameters.

# `t`

```elixir
@type t() :: %Stripe.Params.SourceUpdateParams.Mandate.Acceptance.Offline{
  contact_email: String.t() | nil
}
```

* `contact_email` - An email to contact you with if a copy of the mandate is requested, required if `type` is `offline`.

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*Consult [api-reference.md](api-reference.md) for complete listing*