Postboi Pre-release

Consider it delivered.

Email, SMS, WhatsApp, push and chat from one tiny API. One command to set up, three lines to send, and a fallback chain that stops at the first channel that works.

Start sending, free Tour the channels

3,000 emails a month on us, forever. Every other channel bills at provider cost.

terminal

$ bunx postboi init --sms

✔ Sending to · United Kingdom
✔ Provider · The SMS Works (~2.8p, delivered-only billing)
✔ SMSWORKS_API_KEY written to .env

Done. Texts stay in your terminal until you deploy.

sms()

import { sms } from "postboi"

await sms({
  to: "+44 7788 223344",
  message: "Your code is 4291"
})

Numbers normalised, segments counted, and dev texts logged instead of billed. Read the docs →

See every channel, the fallback chain and how we compare →

No backend? No problem.

Postboi Forms turns any HTML form into email. Point a plain <form> at a hosted endpoint and submissions arrive in your inbox: spam checked, rate limited, attachments included. Perfect for static sites.

index.html · that's the whole integration

<!-- any static site, no backend -->
<form action="https://postboi.email/f/form_k3v9x2m1p8q4" method="POST">
	<input name="email" type="email" required>
	<textarea name="message" required></textarea>
	<button>Send</button>
</form>

Zero infrastructure: works from any HTML page, GitHub Pages included.
Invisible spam protection: honeypot for free, managed captcha one script tag away.
Tidy emails: fields become tables, files become attachments, replies go to the sender.
Free to start: form submissions are ordinary sends on your plan. Read the announcement →

Everything handled. Nothing configured.

⚡

Zero configuration

No DNS records, no SDK per vendor, no dashboard safari. One command per channel and you're sending in under a minute.

🔌

Never locked in

20+ email providers, plus Twilio, Meta, The SMS Works, Web Push, FCM, APNs, Huawei, Slack and friends. Swap any of them with one line of config. Your calls never change.

📡

Cheapest channel first

send() walks your channels in cost order and stops at the first success. Push is free and an SMS is 3p, so stopping early saves the whole message.

🧯

Development is free

Texts and WhatsApp messages are logged locally, never sent. Email lands in a dev inbox. Nothing escapes your laptop, and nothing bills you.

🛡️

Type-safe end to end

Full TypeScript with one normalized error shape across every provider and every channel. A failure always tells you which leg broke.

🎯

SvelteKit one-liner

A contact form is a single form action: export const actions = { default: mail }. Built for SvelteKit, works everywhere.

Or bring your own provider.

Postboi handles email by default. The library speaks every provider below through the same mail() call: bring your own keys, and swapping is a one-line config change.

Amazon SES postboi/ses
Brevo postboi/brevo
Cloudflare postboi/cloudflare
Elastic Email postboi/elasticemail
MailerSend postboi/mailersend
Mailgun postboi/mailgun
Mailjet postboi/mailjet
MailPace postboi/mailpace
Mailtrap postboi/mailtrap
Mandrill postboi/mandrill
Microsoft 365 postboi/microsoft365
Plunk postboi/plunk
Postmark postboi/postmark
Resend postboi/resend
Scaleway postboi/scaleway
SendGrid postboi/sendgrid
✉️ SMTP (any) postboi/smtp
SparkPost postboi/sparkpost
ZeptoMail postboi/zepto
Mock (testing) postboi/mock

Twilio sms · whatsapp
The SMS Works sms
Amazon SNS sms
Meta Cloud API whatsapp
Web Push push
Firebase Cloud Messaging push
Apple Push Notification service push
Huawei Push Kit push
Slack chat
Discord chat
Microsoft Teams chat
Telegram chat

Want another provider? Quit being a baby and open a PR.

Pricing that's a meter, not a wall.

Nothing breaks when you run past your included volume: extra sends are just metered. Start free, add a card only when you outgrow it. The other channels are bring-your-own-provider, billed by your provider at cost. Postboi adds nothing on top, and never charges per contact.

Start here