private async Task <Email> ProcessEmailResponseAsync(EmailResponse response)
{
if (response is null)
{
throw new ArgumentNullException(nameof(response));
}
var email = new Email
{
Text = response.Text,
Html = response.Html,
Subject = response.Subject,
};
email.AddSenders(response.From);
email.AddRecipients(response.To);
email.AddAttachments(await ExtractAttachmentsMetadataAsync(response).ConfigureAwait(false));
return(email);
}
