Send mail after save for each user-email in collection

Hello, this is my code right now, I've got all the emails, but I'm confused with setting up the nodemailer part. I have my own STMP server with SSL, port: 465. How would I go setting it up?

const Posts: CollectionConfig = {
  // fields, admin and such
  hooks: {
    afterChange: [
      async (args) => {
        const emails = await payload
          .find({
            collection: "newsletter-emails",
            where: {
              and: [
                {
                  unsub: {
                    equals: false,
                  },
                },
              ],
            },
            limit: 9999,
          })
          .then((res) => res.docs);
      },
    ],
  },
};

export default Posts;