code: public static Intent newEmailIntent(String address, String subject, String body, Uri attachment) {
          return newEmailIntent(address == null ? null : new String[]{address}, subject, body, attachment);
      }
docs: Create an intent to send an email with an attachment to a single recipient
  
  @param address    The recipient address (or null if not specified)
  @param subject    The subject of the email (or null if not specified)
  @param body       The body of the email (or null if not specified)
  @param attachment The URI of a file to attach to the email. Note that the URI must point to a location the email
  application is allowed to read and has permissions to access.
  @return the intent