Question

Мы реализовали функцию создания черновиков, используя Составить действия .
Однако предмет искажен.
Если объект あいうえお, это будет Re: BDFHJ.
Я хочу предотвратить искаженные символы.

этот код.

Code.js

function buildCard (e) {
  var card = CardService.newCardBuilder();
  card.setHeader(CardService.newCardHeader().setTitle("タイトル"));
  var section = CardService.newCardSection();
  var composeAction = CardService.newAction()
    .setFunctionName('createReplyDraft');
  var composeButton = CardService.newTextButton()
    .setText('Compose Reply')
    .setComposeAction(composeAction, CardService.ComposedEmailType.REPLY_AS_DRAFT);
  section.addWidget(composeButton);
  card.addSection(section);
  return card.build();
}

/**
 *  Creates a draft email (with an attachment and inline image)
 *  as a reply to an existing message.
 *  @param {Object} e data passed by the compose action.
 *  @return {ComposeActionResponse}
 */
function createReplyDraft(e) {
  // Activate temporary Gmail add-on scopes, in this case to allow
  // a reply to be drafted.
  var accessToken = e.messageMetadata.accessToken;
  GmailApp.setCurrentMessageAccessToken(accessToken);

  // Creates a draft reply.
  var messageId = e.messageMetadata.messageId;
  var message = GmailApp.getMessageById(messageId);
  var draft = message.createDraftReply('あいうえお');  //There is no problem with body.

  // Return a built draft response. This causes Gmail to present a
  // compose window to the user, pre-filled with the content specified
  // above.
  return CardService.newComposeActionResponseBuilder()
    .setGmailDraft(draft).build();
}

appsscript.json

{
  "oauthScopes": [
    "https://www.googleapis.com/auth/gmail.addons.execute",
    "https://www.googleapis.com/auth/gmail.readonly"
  ],
  "gmail": {
    "name": "Gmail Add-on Quickstart",
    "logoUrl": "https://www.gstatic.com/images/icons/material/system/2x/bookmark_black_24dp.png",
    "contextualTriggers": [{
      "unconditional": {
      },
      "onTriggerFunction": "buildCard"
    }],
    "openLinkUrlPrefixes": [
      "https://mail.google.com/"
    ],
    "primaryColor": "#4285F4",
    "secondaryColor": "#4285F4"
  },
  "oauthScopes":[ 
    "https://mail.google.com/",
    "https://www.googleapis.com/auth/gmail.addons.execute",
    "https://www.googleapis.com/auth/script.external_request"]
}

этот поток.

step1. У тебя есть почта.