What's the simplest way to send auth emails?

The simplest way is usually to use a hosted email delivery service rather than running your own SMTP server.

Easiest options

• Resend – very simple API, good developer experience
• Postmark – excellent for transactional/auth emails, very reliable
• SendGrid – popular, lots of features, a bit heavier
• AWS SES – cheap and solid, but more setup

For auth emails specifically

Use a transactional email provider and send:

• signup verification
• password reset
• magic link / login link
• 2FA codes

Minimal setup

1. Create an account with a provider
2. Verify your sending domain
3. Add SPF/DKIM records to DNS
4. Send emails via API or SMTP from your app

Best “simple” recommendation

If you want the quickest path with the least friction:

• Resend if you want modern API simplicity
• Postmark if you want reliability and great deliverability for auth emails

Tiny example

Most providers let you do something like:

await emailClient.send({
  from: "Auth <no-reply@yourdomain.com>",
  to: user.email,
  subject: "Verify your email",
  html: `<p>Click <a href="${link}">here</a> to verify.</p>`
})

If you want, I can recommend the best option for your stack:

• Node/Next.js
• Python/Django
• Rails
• PHP
• no-code / low-code