Boost your email API.

Email performance = Revenue

Your transactional email should NOT trigger spam or marketing filters. Flute Mail plugs into your existing API provider to properly isolate segments, boost inbox rates, and safely store your transactional email data.

Works with these providers:

directions Boost delivery

Powerful features designed to help you tweak and optimize your delivery, guaranteeing you the best inbox rates in the industry.

search Boost email storage

Get lightning fast storage and search across all your email providers and servers with our Elasticsearch integration. Own and export your data.

trending_up Boost insights

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

 

Flute Enterprise Business Owners and Growth Hackers

 

How it works

Hook up your existing email API keys, and we give you a dashboard to dynamically control your email. Start sending requests through our API, and we handle the routing automatically. When spam issues happen, you can easily control your API and take action: tweak domains, switch providers, and load-balance requests on the fly.

Critical Emails

Providers

closeSendGrid
checkPrivate Servers

Before Flute

face
96%
Delivery rate

After Flute*

face
99%
Delivery rate
Transactional Emails

Providers

closeAmazon SES
checkPostmark

Before Flute

face
93%
Delivery rate

After Flute*

face
98%
Delivery rate
Promotional Emails

Providers

closePostmark
checkSparkPost

Before Flute

face
75%
Delivery rate

After Flute*

face
90%
Delivery rate

Flute makes it easy to boost your deliverability by doing proper segmentation, dynamic FROM tweaks, multi-provider A/B testing, and our special sauce, that is Smart Failover.

  • The Flute Deliverability Guarantee: If you don't see a significant improvement in your overall open/click rate after integrating Flute, we'll refund your money, no questions asked. Read more.

Delivery optimization tech developed at the University of Toronto. Read the first whitepaper.

PUBLIC BETA

Ready to start sending? Test your API in minutes.

Sign up before June 30th to reserve your free-tier API,
and get a free deliverability consultation.