MailComposer: html is not working (web)

I would like to add formatting to the body of an email using expo-mail-composer.
However the email created is still showing the html tag <div> in the body.

import * as MailComposer from 'expo-mail-composer';

const mailComposerOptions = {
    isHtml: true,
    body: `<div> Welcome !</div> `
  }
function sendEmail() {
    MailComposer.composeAsync(mailComposerOptions)
  }