Many sending domains.One shared quota.

Connect with standard SMTP or the Email API. Verify each sending domain with SPF and DKIM, then send from any of them against the quota of your account's active plan.

Get started Read the docs

Standard SMTP and HTTP APISPF and DKIM verificationTotal, daily and hourly limits

MULTI-DOMAIN ROUTING CORE

Per-plan limits

Free300 left

Daily 50Hourly 10

Integrate in minutes

Standard SMTP or a plain HTTP request — no proprietary SDK. Change the From address to send from any of your verified domains.

Sample domain:

import nodemailer from "nodemailer";

const transporter = nodemailer.createTransport({

host: "smtp.smtpdog.com",

port: 465,

secure: true, // implicit TLS on 465

auth: {

user: "smtpdog", // any non-empty value

pass: process.env.SMTPDOG_API_KEY,

});

const { messageId } = await transporter.sendMail({

from: "noreply@app.example.com",

to: "recipient@example.com",

subject: "Hello from app.example.com",

text: "Sent over standard SMTP.",

});

Static example: nothing runs on this page. Replace the placeholders with your own values and keep credentials on the server.

BUILT FOR MULTI-DOMAIN TEAMS

Manage many domains in one place.

Stop setting up a separate email service for every project. Verify each sending domain once, keep keys and templates together, and share the quota of your active plan.

VERIFIED DOMAIN CLUSTER

Multiple verified domains

SPF · DKIM

app.example.com

mail.example.com

notify.example.org

auth.example.net

DOMAIN LIMIT

Set by plan

DNS RECORDS

TXT

DKIM KEY

RSA-2048

Verified domains, one console

Bind the sending domains of your products and client sites. Each domain must pass DNS verification before it can send, and the number of domains is capped by your plan.

Read the domain guide

ACCOUNT QUOTA

300

RESULT

202 + Webhook

Total quota300

Daily limit50 / 24h

Hourly limit10 / 1h

SMTP 465 / 587HTTP 202 Accepted + Webhook

One quota, three safeguards

All verified domains draw on the quota of your account's active plan, with total, daily and hourly limits enforced by the server. Acceptance is not inbox delivery — track the final status through the API or signed webhooks.

Read the SMTP guide

PLANS · SHARED QUOTA

Pick a plan. Share it across domains.

Every verified domain draws on the quota of your active plan. The plans below are read live from our service.

Free

Limit 1 per user

1 month

Free/ 300 emails

Validity · 1 month

Maximum domains: 1,000
Total send allowance: 300
Daily limit: 50
Hourly limit: 10

Welcome

Limit 1 per user

One-time pack · 3 months

$1.99/ 5,000 emails

≈ $0.40 / 1K emails

Maximum domains: 1,000
Total send allowance: 5,000
Daily limit: 300
Hourly limit: 60

Lite

One-time pack · 6 months

$3.99/ 10,000 emails

≈ $0.40 / 1K emails

Maximum domains: 1,000
Total send allowance: 10,000
Daily limit: 500
Hourly limit: 100

Starter

One-time pack · 12 months

$9.99/ 30,000 emails

≈ $0.33 / 1K emails

Maximum domains: 1,000
Total send allowance: 30,000
Daily limit: 1,000
Hourly limit: 200

Growth

One-time pack · 12 months

$18.99/ 60,000 emails

≈ $0.32 / 1K emails

Maximum domains: 1,000
Total send allowance: 60,000
Daily limit: 2,000
Hourly limit: 300

Business

One-time pack · 12 months

$34.99/ 120,000 emails

≈ $0.29 / 1K emails

Maximum domains: 1,000
Total send allowance: 120,000
Daily limit: 5,000
Hourly limit: 600

Paid plans are purchased in the console after you sign in.

Start sending from your own domains.

Create an account, verify a sending domain, and send over standard SMTP or the Email API.

Create an account Read the docs