SendMessageRequest

public SendMessageRequest SendMessageRequest(@Json(name = "to") List<EmailName> to, @Json(name = "bcc") List<EmailName> bcc, @Json(name = "cc") List<EmailName> cc, @Json(name = "reply_to") List<EmailName> replyTo, List<CreateAttachmentRequest> attachments, @Json(name = "snippet") String snippet, @Json(name = "subject") String subject, @Json(name = "thread_id") String threadId, @Json(name = "body") String body, @Json(name = "starred") Boolean starred, @Json(name = "unread") Boolean unread, @Json(name = "send_at") Integer sendAt, @Json(name = "reply_to_message_id") String replyToMessageId, @Json(name = "tracking_options") TrackingOptions trackingOptions, @Json(name = "use_draft") Boolean useDraft)