class EmailProperty {
  static const String id = 'id';
  static const String blobId = 'blobId';
  static const String keywords = 'keywords';
  static const String size = 'size';
  static const String receivedAt = 'receivedAt';
  static const String hasAttachment = 'hasAttachment';
  static const String preview = 'preview';
  static const String subject = 'subject';
  static const String sentAt = 'sentAt';
  static const String from = 'from';
  static const String to = 'to';
  static const String cc = 'cc';
  static const String bcc = 'bcc';
  static const String replyTo = 'replyTo';
  static const String mailboxIds = 'mailboxIds';
  static const String threadId = 'threadId';
  static const String bodyValues = 'bodyValues';
  static const String htmlBody = 'htmlBody';
  static const String attachments = 'attachments';
  static const String headers = 'headers';
  static const String headerMdnKey = 'Disposition-Notification-To';
  static const String messageId = 'messageId';
  static const String references = 'references';
  static const String headerUnsubscribeKey = 'List-Unsubscribe';
  static const String headerSMimeStatusKey = 'X-SMIME-Status';
  static const String headerListPostKey = 'List-Post';
}