Transactional email for indie hackers

import { Emailssh } from '@emails.sh/sdk';

const emails = new Emailssh(process.env.EMAILSSH_API_KEY!);

const FROM = 'Acme <hello@acme.com>';

// Every send is tagged. Tags are what make the delivery log searchable when a
// customer emails you saying they never got something.
export const sendVerification = (to: string, link: string) =>
	emails.send({
		from: FROM,
		to: [to],
		subject: 'Confirm your email',
		html: `<p><a href="${link}">Confirm your email</a></p>`,
		text: `Confirm your email: ${link}`,
		tags: { type: 'verification' }
	});

export const sendPasswordReset = (to: string, link: string) =>
	emails.send({
		from: FROM,
		to: [to],
		subject: 'Reset your password',
		html: `<p><a href="${link}">Reset your password</a></p><p>Expires in an hour.</p>`,
		text: `Reset your password (expires in an hour): ${link}`,
		tags: { type: 'password-reset' }
	});

export const sendReceipt = (to: string, orderId: string, amount: string) =>
	emails.send({
		from: FROM,
		to: [to],
		replyTo: 'support@acme.com',
		subject: `Receipt for order ${orderId}`,
		html: `<p>Order ${orderId}, ${amount}. Thanks.</p>`,
		text: `Order ${orderId}, ${amount}. Thanks.`,
		tags: { type: 'receipt' },
		idempotencyKey: `receipt:${orderId}`
	});

export const sendTrialEnding = (to: string, days: number) =>
	emails.send({
		from: FROM,
		to: [to],
		subject: `Your trial ends in ${days} days`,
		html: `<p>Your trial ends in ${days} days. Add a card to keep your data.</p>`,
		text: `Your trial ends in ${days} days. Add a card to keep your data.`,
		tags: { type: 'trial-ending' }
	});

To:      buyer@example.com
Subject: Receipt for order 3391

Order 3391, $12.00. Thanks.