Cheaper than letting your important emails bounce.

$120 $45/month

145,000 emails/mo

45-days data retention

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Includes 1-on-1 setup and deliverability consultation.


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Unlimited emails/mo

Custom data retention

  • check Private Data Cluster
  • check SLA Guarantee
  • check Privacy / GDPR Compliance
  • check Bi-Monthly Delivery Consultation
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Expert, fully managed email delivery service, at massive scale.

Flute's unified API is the last email provider you'll spend time integrating. And most concierge migrations can be done in about 30 minutes.


What is Smart Failover?

A Smart Failover happens when we detect an email API error or delivery failure with your primary provider. We attempt to automatically fix that by sending through the failover providers. For example, if an email failed through SendGrid, we can retry through SparkPost. You can configure this failover in your Virtual Flute settings.

How does the Flute Guarantee work?

Sign up for one of our paid plans, and contact us to set up a free onboarding consultation to help you ensure you're making the most of our platform. If you don't see a significant improvement in your overall engagement rates (opens/clicks) within 1 month after integrating Flute, we'll refund your last monthly invoice, no questions asked. We'll let you define what "significant" means to you.

Do you offer a free trial? Is a credit card required?

Yes. Contact us for a free trial sign up link. And yes, we require a credit card for verification purposes: to prevent email spammers from using our service.

What if I go over the monthly email volume quota/limit?

We will send you email warnings before you reach your quota, so you can upgrade your account before you hit the limit. If you actually go over the limit, we will continue to allow an overage of about 20,000 emails before requests start to fail.

Do I still need an account with SendGrid/Mailgun/etc?

Yes, we are not an email provider, we are only a routing/failover service. You still need to have an account with one of our supported primary providers, and are bound by their terms. However, we also offer professional API management services if you would rather not manage multiple email vendors. Contact us for details.