Send password resets, order confirmations, and notifications with a simple REST API. Trusted by 10,000+ developers.
No credit card required • 5,000 emails free every month
50M+
Emails Delivered
99.9%
Deliverability
<2s
Avg Delivery
10K+
Active Users
Everything you need to send transactional emails without the complexity
Average delivery time under 2 seconds. Your emails reach inboxes instantly, not minutes later
Enterprise-grade infrastructure ensures your emails land in the inbox, not spam folder
Clean, developer-friendly API. Integrate in minutes with any programming language
Track delivery status, open rates, and engagement metrics in your dashboard
From user signups to order confirmations, we've got you covered
Onboard new users with personalized welcome emails that create great first impressions
Account activation, getting started guides
Send secure password reset links instantly when users need to recover their accounts
Reset links, security alerts
Confirm purchases immediately with detailed order information and tracking details
Order receipts, shipping updates
Keep users informed with real-time notifications about important events and updates
Account activity, system alerts
Send professional receipts and invoices automatically after transactions
Payment confirmations, billing statements
Deliver secure verification codes for two-factor authentication workflows
OTP codes, login verification
Simple REST API that works with any programming language
const sendEmail = async () => {
const response = await fetch(
'https://api.mailapi.dev/v1/email',
{
method: 'POST',
headers: {
'Authorization': 'Bearer YOUR_API_KEY',
'Content-Type': 'application/json'
},
body: JSON.stringify({
from: 'Your App <noreply@mail.mailapi.dev>',
to: 'user@example.com',
subject: 'Welcome!',
message: '<h1>Welcome aboard!</h1>'
})
}
);
return await response.json();
};import requests
def send_email():
url = "https://api.mailapi.dev/v1/email"
headers = {
"Authorization": "Bearer YOUR_API_KEY",
"Content-Type": "application/json"
}
data = {
"from": "Your App <noreply@mail.mailapi.dev>",
"to": "user@example.com",
"subject": "Welcome!",
"message": "<h1>Welcome aboard!</h1>"
}
response = requests.post(url, headers=headers, json=data)
return response.json()No hidden fees. No surprises. Just reliable email delivery.
Sign up, get your API key, and start sending emails. No complex SMTP configuration or DNS records to manage initially.
Built on AWS infrastructure with automatic failover, load balancing, and 99.9% uptime SLA.
Multi-region infrastructure ensures fast email delivery worldwide with low latency everywhere.
Start with 5,000 free emails every month. No credit card required. Upgrade anytime.
Join 10,000+ developers • No credit card required
Transactional emails are automated emails sent to individual users based on their actions or events. Examples include password resets, order confirmations, welcome emails, and account notifications. Unlike marketing emails, they're triggered by user behavior.
MailApi.dev is specifically designed for transactional emails with guaranteed delivery and low latency. Marketing email platforms are built for bulk campaigns and newsletters. We focus on reliability, speed, and developer experience for automated one-to-one emails.
No! You can start sending emails immediately using our REST API with no SMTP configuration. For production use, we recommend verifying your domain for better deliverability, but you can test with 5,000 free emails using our default sender.
We maintain a 99.9% deliverability rate through careful IP reputation management, automatic bounce handling, and best-practice email authentication (SPF, DKIM, DMARC). We monitor blacklists 24/7 and take immediate action if issues arise.
Yes! Our API automatically detects HTML content and sends it appropriately. You can send both HTML and plain text emails. We support responsive HTML templates, inline CSS, and images.
We automatically retry failed emails up to 3 times with exponential backoff. If delivery still fails, you'll receive an error code explaining why. Our dashboard shows detailed delivery logs for troubleshooting.
No credit card. No setup fees. Just reliable email delivery.
Get Your Free API Key