Send email from Vercel

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

const mail = new Emailssh({ apiKey: process.env.EMAILSSH_API_KEY! });

export async function POST(request: Request): Promise<Response> {
	const body = (await request.json()) as { email?: string; name?: string };

	if (!body.email?.includes('@')) {
		return Response.json({ error: 'A valid email is required' }, { status: 400 });
	}

	const name = body.name ?? 'there';

	try {
		const sent = await mail.send({
			from: process.env.EMAILSSH_FROM ?? 'Acme <onboarding@emails.sh>',
			to: [body.email],
			subject: 'Welcome to Acme',
			html: `<p>Hi ${escapeHtml(name)}, your Acme account is ready.</p>`,
			text: `Hi ${name}, your Acme account is ready.`,
			idempotencyKey: `welcome:${body.email.toLowerCase()}`
		});

		return Response.json({ id: sent.id, status: sent.status });
	} catch (error) {
		console.error('emails.sh send failed', error);
		return Response.json({ error: 'Could not send right now' }, { status: 502 });
	}
}

function escapeHtml(value: string) {
	return value.replaceAll('&', '&amp;').replaceAll('<', '&lt;').replaceAll('>', '&gt;');
}

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

const mail = new Emailssh({ apiKey: process.env.EMAILSSH_API_KEY! });

export async function GET(request: Request): Promise<Response> {
	// Vercel Cron sends Authorization: Bearer <CRON_SECRET>. Without this check
	// the route is a public URL anyone can hit to make you send mail.
	const auth = request.headers.get('authorization');
	if (auth !== `Bearer ${process.env.CRON_SECRET}`) {
		return new Response('Unauthorized', { status: 401 });
	}

	const recipients = ['a@example.com', 'b@example.com'];

	// Batch, so 100 recipients is one request and does not run into the
	// function's execution time limit.
	await mail.batch(
		recipients.map((to) => ({
			from: process.env.EMAILSSH_FROM ?? 'Acme <onboarding@emails.sh>',
			to: [to],
			subject: 'Your Acme digest',
			html: '<p>Here is what happened yesterday.</p>',
			text: 'Here is what happened yesterday.'
		}))
	);

	return Response.json({ ok: true, count: recipients.length });
}

{
	"crons": [
		{
			"path": "/api/cron/digest",
			"schedule": "0 9 * * *"
		}
	]
}