The Best SMTP Relay for Developers

Use the most reliable infrastructure for your transactional and bulk emails. It only takes 5 minutes to setup Critsend and start enjoying fast delivery time and automatic scalability.

Send 1,000 emails for free and get 30-day money-back guarantee on your first purchase*.

Simple

Built for Developers

Critsend is simple and scalable, with a powerful API. Start sending in 5 minutes.

Fast

Super Speed

Send large quantities of emails in an average of 30 seconds or less.

Reliable

High Reliability

Enjoy 99.99% uptime on both our SMTP relays and our APIs.

Pricing

With Critsend, you only pay for what you actually use. No hidden fees, no complicated monthly plans. When you purchase a package, credits are valid for 3 years and all features are immediately available to you.

Starter

$50
100,000 emails

All features included

Plus

$250
500,000 emails

All features included

Premium

$1,000
3,000,000 emails

All features included

Enterprise

$3,000
10,000,000 emails

All features included

Send 1,000 emails for free and get 30-day money-back guarantee on your first purchase*.


* If you for any reason are not happy with our services you can request a refund as long as it is done within 30 days from the original date of purchase. A partial refund will be issued to you covering the cost of unused credits.

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