The new email API designed to hit the inbox.

Your transactional email should NOT trigger spam or marketing filters. Flute Mail is a reliable cloud API designed to guarantee better inbox rates. Integrates with your favorite email providers and tools.

Integrates seamlessly with:

directions Ensure delivery

A simple email API that allows you to integrate with any provider or server, and is designed to ensure you're getting the best possible deliverability and reliability in the industry.

search Better logs

Get lightning fast storage and search across all your email providers and servers. Own and export your full-content email logs and delivery data.

trending_up Easy segmentation

Easily isolate and manage different types of email, such as marketing, promotional and critical emails, and get pre-made Kibana analytics dashboards to see how different emails affect your business.

Flute API Developers and DevOps Teams

 
Features

Flute Enterprise Business Owners and Growth Hackers

 
Request demo

Deliverability matters.

Flute is the email API designed by folks who care about DevOps, SRE, and email industry best practices. We guarantee you'll see better deliverability and engagement, or you get your money back.

Critical Emails

Providers

closeSendGrid
checkPrivate Servers

Before Flute

face
98%
Delivery rate

After Flute*

face
99%
Delivery rate
Transactional Emails

Providers

closeAmazon SES
checkPostmark

Before Flute

face
97%
Delivery rate

After Flute*

face
98%
Delivery rate
Promotional Emails

Providers

closePostmark
checkSparkPost

Before Flute

face
85%
Delivery rate

After Flute*

face
90%
Delivery rate

Our secret sauce is a combination of highly isolated segmentation, dynamic FROM replacement, provider A/B testing, and Smart Failover. So you can ensure your email reaches the inbox, not the spam folder.

  • The Flute Deliverability Guarantee: If you don't see at least a 1% improvement in your overall deliverability rate after integrating Flute, we'll refund your money, no questions asked. Read more.

Deliverability tech developed at the University of Toronto. Read the first official whitepaper.

beta

Ready to start sending?
Free to sign up during public beta.

If you sign up before May 15, 2018, you'll get a free-tier plan that stays free forever. Also, we'll throw in a complimentary one-on-one consultation to ensure you're making the most of your email program.