totuworld/emailTemplate.html

## emailTemplate.html
<!DOCTYPE html>
<html>
  <head>
    <base target="_top">
  </head>
  <body>
    <img src='cid:megaphone' />
    <h2>안녕하세요 <?= name ?>님</h2>
    <p>
    이번달 청구금액 안내드립니다.<br />
    <br />
    청구금액: <?= billing ?> <br />
    정산 내역서는 첨부파일 참고 부탁드립니다.<br />
    감사합니다.
    </p>
  </body>
</html>

## introduceMemberEmail.html
<!DOCTYPE html>
<html>
  <head>
    <base target="_top">
    <style type='text/css'>
      @font-face {
        font-family: 'BMDOHYEON';
        src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_one@1.0/BMDOHYEON.woff') format('woff');
        font-weight: normal;
        font-style: normal;
      }

      li {
        font-family: 'BMDOHYEON'
      }
    </style>
  </head>
  <body>
    <img src='cid:megaphone' style="width: 30%" />
    <h1>신규 입사자를 소개합니다</h1>
    <? for (let d = 0; d < data.length; d++) { ?>
      <? let members = data[d].members; ?>
      <p><?= data[d].division ?></p>
      <ul>
        <? for (var i = 0; i < members.length; i++) { ?>
          <li><a href="<?!= members[i].link ?>"><p><?= members[i].name ?><br /><?= members[i].team ?><br /><?= members[i].department ?></p><img src="<?!= members[i].img ?>" style="width: 90px;" /></a></li>
        <? } ?>
      </ul>
    <? } ?>
  </body>
</html>

## sendEmailWithImgAndAttachment.js
function sendEmailWithFile() {
  const sheets = SpreadsheetApp.getActiveSpreadsheet();
  const list = sheets.getSheetByName('list');
  const template = sheets.getSheetByName('template');

  const subject = template.getRange(2, 1).getValue();
  const lastRow = list.getLastRow();

  const folderID = 'folder id'; // 폴더 id
  const folder = DriveApp.getFolderById(folderID);
  const files = folder.getFiles();
  const fileMap = {};
  while (files.hasNext()) {
    let file = files.next();
    const fileName = file.getName().replace(/\s/g, '').normalize('NFC');
    const encodeFileName = Utilities.base64Encode(fileName);

    fileMap[encodeFileName] = file;
  }

  let htmlTemplate = HtmlService.createTemplateFromFile('template');

  const imageFile = DriveApp.getFileById('file id');
  const inlineImages = {
    megaphone: imageFile
  }

  for (let i = 2; i < lastRow + 1; i++) {
    const email = list.getRange(i, 3).getValue(); // 이메일 주소
    const name = list.getRange(i, 1).getValue(); // 담당자 명
    const billing = list.getRange(i, 4).getValue(); // 정산 금액
    const excelFileName = list.getRange(i, 5).getValue().replace(/\s/g, ''); // 보내야하는 정산내역서 명
    const encodeExcelFileName = Utilities.base64Encode(excelFileName);
    const excelFile = fileMap[encodeExcelFileName];
    const attachments = [excelFile];

    htmlTemplate.name = name;
    htmlTemplate.billing = billing;


    MailApp.sendEmail(
      {
        to: email,
        subject,
        htmlBody: htmlTemplate.evaluate().getContent(),
        attachments: attachments,
        inlineImages: inlineImages,
      }
    );
  }
}
	<!DOCTYPE html>
	<html>
	<head>
	<base target="_top">
	</head>
	<body>
	<img src='cid:megaphone' />
	<h2>안녕하세요 <?= name ?>님</h2>
	<p>
	이번달 청구금액 안내드립니다.<br />
	<br />
	청구금액: <?= billing ?> <br />
	정산 내역서는 첨부파일 참고 부탁드립니다.<br />
	감사합니다.
	</p>
	</body>
	</html>
	function sendEmailWithFile() {
	const sheets = SpreadsheetApp.getActiveSpreadsheet();
	const list = sheets.getSheetByName('list');
	const template = sheets.getSheetByName('template');

	const subject = template.getRange(2, 1).getValue();
	const lastRow = list.getLastRow();

	const folderID = 'folder id'; // 폴더 id
	const folder = DriveApp.getFolderById(folderID);
	const files = folder.getFiles();
	const fileMap = {};
	while (files.hasNext()) {
	let file = files.next();
	const fileName = file.getName().replace(/\s/g, '').normalize('NFC');
	const encodeFileName = Utilities.base64Encode(fileName);

	fileMap[encodeFileName] = file;
	}

	let htmlTemplate = HtmlService.createTemplateFromFile('template');

	const imageFile = DriveApp.getFileById('file id');
	const inlineImages = {
	megaphone: imageFile
	}

	for (let i = 2; i < lastRow + 1; i++) {
	const email = list.getRange(i, 3).getValue(); // 이메일 주소
	const name = list.getRange(i, 1).getValue(); // 담당자 명
	const billing = list.getRange(i, 4).getValue(); // 정산 금액
	const excelFileName = list.getRange(i, 5).getValue().replace(/\s/g, ''); // 보내야하는 정산내역서 명
	const encodeExcelFileName = Utilities.base64Encode(excelFileName);
	const excelFile = fileMap[encodeExcelFileName];
	const attachments = [excelFile];

	htmlTemplate.name = name;
	htmlTemplate.billing = billing;


	MailApp.sendEmail(
	{
	to: email,
	subject,
	htmlBody: htmlTemplate.evaluate().getContent(),
	attachments: attachments,
	inlineImages: inlineImages,
	}
	);
	}
	}