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SendX

Email software to send campaigns, build lists, and automate marketing

SendPost

Reach your customers' inboxes on time, every time with Email API + SMTP Relay

Current

SendVerify

Clean email lists to eliminate bounces and engage subscribers

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Features

Developers Bulk Senders E-Commerce ESPs

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Email that actually reaches the inbox

Deliver your emails with confidence. SendPost is the ultimate email API and SMTP relay service for developers, businesses, and ESPs who demand a reliable and scalable solution for their email sending needs.

Try it free

No credit card required. Cancel any time.

See how it works

Deliverability Rate

99.5%

Emails Sent Monthly

1B+

Uptime

99.99%

Customer Satisfaction

98%

Contact Growth

200

175

150

125

100

01/01

01/04

01/07

01/10

01/13

01/16

01/19

01/22

01/25

01/28

01/31

Recognized by G2

SendPost is proud to be recognized as a leader in email deliverability and transactional email software.

Trusted by companies worldwide

A comprehensive suite of tools to manage and optimize your email sending.

Everything you need to ensure your emails reach the inbox, every time.

Email API

Robust and reliable email sending infrastructure.

Integrate easily with our robust API and SMTP relay.

SDKs available in 14+ programming languages.

Scale from a few thousand to millions of emails.

Learn More

Subaccounts and Groups

Organize your sending for better management and reputation protection.

Segregate email sending for different products or customers.

Create unlimited sub-accounts with their own reputation.

Use groups to categorize emails for detailed analysis.

Learn More

Email Deliverability Stats

Monitor and analyze your email performance in detail.

Get detailed stats on deliverability, bounce rates, and open rates.

Track performance at the account, sub-account, and IP level.

Make data-driven decisions to improve your email strategy.

Learn More

Deliverability Alerts & Notifications

Stay ahead of deliverability issues with proactive alerts.

Get real-time alerts via Slack or email for deliverability risks.

Take immediate action to protect your sender reputation.

Prevent your emails from landing in the spam folder.

Learn More

Pro Deliverability Tools

Fine-tune your sending for optimal deliverability.

Automate IP warmup for new dedicated IPs.

Use email throttling to manage sending speed and avoid blocks.

Intelligently route emails for better performance.

Learn More

Shared & Dedicated IP Pools

Choose the right IP solution for your sending needs.

Start quickly with shared IP pools for lower volume sending.

Get a dedicated IP for maximum control over your reputation.

Scale seamlessly as your sending volume grows.

Learn More

Email Webhooks

Integrate email event data with your applications.

Get real-time notifications for opens, clicks, bounces, and more.

Automate your workflows based on email events.

Gain deeper insights into your email performance.

Learn More

Email Event Logs

Troubleshoot and analyze email events with detailed logs.

Easily debug deliverability issues.

Understand what happens to your emails after you send them.

Access detailed information for each email event.

Learn More

Email Deliverability CRM

Our industry-first Deliverability CRM.

Manage and resolve deliverability issues in a systematic way.

Prioritize and track incidents to resolution.

Build a knowledge base to prevent future issues.

Learn More

Email API

Robust and reliable email sending infrastructure.

Integrate easily with our robust API and SMTP relay.
SDKs available in 14+ programming languages.
Scale from a few thousand to millions of emails.

Subaccounts and Groups

Organize your sending for better management and reputation protection.

Segregate email sending for different products or customers.
Create unlimited sub-accounts with their own reputation.
Use groups to categorize emails for detailed analysis.

Email Deliverability Stats

Monitor and analyze your email performance in detail.

Get detailed stats on deliverability, bounce rates, and open rates.
Track performance at the account, sub-account, and IP level.
Make data-driven decisions to improve your email strategy.

Deliverability Alerts & Notifications

Stay ahead of deliverability issues with proactive alerts.

Get real-time alerts via Slack or email for deliverability risks.
Take immediate action to protect your sender reputation.
Prevent your emails from landing in the spam folder.

Pro Deliverability Tools

Fine-tune your sending for optimal deliverability.

Automate IP warmup for new dedicated IPs.
Use email throttling to manage sending speed and avoid blocks.
Intelligently route emails for better performance.

Shared & Dedicated IP Pools

Choose the right IP solution for your sending needs.

Start quickly with shared IP pools for lower volume sending.
Get a dedicated IP for maximum control over your reputation.
Scale seamlessly as your sending volume grows.

Email Webhooks

Integrate email event data with your applications.

Get real-time notifications for opens, clicks, bounces, and more.
Automate your workflows based on email events.
Gain deeper insights into your email performance.

Email Event Logs

Troubleshoot and analyze email events with detailed logs.

Easily debug deliverability issues.
Understand what happens to your emails after you send them.
Access detailed information for each email event.

Email Deliverability CRM

Our industry-first Deliverability CRM.

Manage and resolve deliverability issues in a systematic way.
Prioritize and track incidents to resolution.
Build a knowledge base to prevent future issues.

Opens by email client

Desktop

Mobile

Other

Gmail35%

Apple Mail25%

Yahoo Mail18%

Thunderbird12%

A/B variations

Variation 1

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Why Choose SendPost?

We are obsessed with deliverability, so you don't have to be.

Unmatched Deliverability

Our powerful tools and expert support help you build and maintain a strong sender reputation.

Actionable Insights

Our detailed analytics and real-time reporting give you the insights you need to make data-driven decisions.

Proactive Issue Resolution

Our smart alerts and Deliverability CRM help you identify and resolve issues before they impact your business.

Learn more about our features

Scalability and Flexibility

Whether you're a startup or a large enterprise, SendPost scales with your business.

Industries we proudly support:

We believe in fair treatment for legitimate businesses. As long as you follow applicable laws and maintain good sending practices, we've got your back.

Cryptocurrency & Blockchain - From exchanges to NFT platforms

Adult Content - Legal, consensual content businesses

CBD & Cannabis - Legal operations in permitted jurisdictions

Dating Services - From mainstream to niche platforms

For Developers

Our clean email API, easy integration, and great documentation make it a breeze to build email into your applications.

For Bulk Senders

Run your email infrastructure on our shared or dedicated IPs. Get auto IP warmup, detailed SMTP stats, and smart alerts on deliverability issues.

For ESPs

We provide everything from pro deliverability tools to smart alerts and notifications to help you manage your customers' email sending.

What customers are saying...

SendPost has been a game-changer for our transactional emails. The deliverability is fantastic, and the detailed analytics help us understand our customers better.

Sarah J., Marketing Director

E-commerce Brand

The API is incredibly easy to work with, and the documentation is top-notch. We were up and sending in no time. The reliability is rock-solid.

Mike R., Lead Developer

SaaS Company

SendPost is a secure and reliable email solution. It has met all our requirements without any drawbacks. Communication has been smooth and dependable throughout.

Vanita G.

Marketing Head

SendPost gives us the control we lacked with Sendgrid, especially around sending speeds, IPs, and error handling. After two years of use, it’s been consistently reliable with no major downsides.

Aaron K.

Free Trial Conversion Specialist, Marketing and Advertising

Frequently asked questions

Everything you need to know about SendX and email marketing

Still have questions? We're here to help.

Visit Help Center Contact Support

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Billions of critical emails delivered monthly.

Email analytics dashboard showing opens by email client with 3D perspective