PowerMTA

High-volume email. Infrastructure you control.

Run PowerMTA on your own servers or in a public cloud. Give your team control over sending IPs, queues and delivery routing for business-critical email. Work with our MTA team to scope the license, deployment and support your operation needs.

Send your requirements. Our team will follow up by email about licensing and deployment.

PowerMTA

Separate sending streams

Your sending applications

Your infrastructure

Virtual MTA 01

Transactional

Receipts and account messages

Sending IPs

Queue · rate limits · routing

Virtual MTA 02

Campaigns

Newsletters and promotions

Sending IPs

Queue · rate limits · routing

GmailOutlookYahoo

Delivery to recipient mail servers

Illustrative configuration. Separate traffic by purpose, customer or sending requirements; scope capacity and licensing with the MTA team.

Advanced infrastructure

Deploy PowerMTA on your own servers or in any public cloud. Achieve high-speed sending with a small hardware footprint, requiring fewer servers while delivering greater performance.

Smart Alerting

Receive specific recommendations for resolving high-priority issues. Address list quality or low engagement problems before they impact your email performance.

Advanced monitoring

Track delivery metrics and receive instant alerts for spam traps or blocklist issues. Take immediate action with expert recommendations to maintain sending reputation.

Comprehensive Analytics

Review over 35 individual metrics affecting deliverability and engagement. Track bounces, blocks, and delivery rates with detailed per-domain, per-campaign, and per-recipient analytics.

Performance Monitoring

Monitor sender reputation in real-time through SMTP responses from inbox providers. Make instant adjustments to optimize delivery based on live performance data.

Volume-Based Licensing

Scale up or down based on your needs with volume-based licensing. Easily adjust for seasonal changes, testing, and disaster recovery without unnecessary costs.

Cloud-ready deployment

Run PowerMTA on your own server or in any public cloud such as AWS or Azure, with a small hardware footprint that delivers high-speed sending at scale.

Separate your sending streams.

PowerMTA lets you split traffic into independent streams, called virtual MTAs, inside a single instance. Each stream gets its own IPs, reputation, and rate limits, so your transactional mail, your marketing campaigns, and your per-customer sending stay isolated. Separating streams gives you more control over how traffic is managed. Shared domains and recipient-provider policies can still affect results. Route each stream directly from your servers or through another platform.

Move to the hosted platform at your own pace.

You don't have to choose between PowerMTA and a hosted service. Run PowerMTA as a relay and send a slice of your traffic, say ten percent, on to the hosted Bird Email API, watch how it performs, then shift more when you're ready, all without repointing your sending code. Keep some streams on your own servers for as long as you like, or retire the on-prem footprint entirely once you've migrated. There is no rip-and-replace, and you can roll back at any time.

Questions about PowerMTA

Can I run PowerMTA and the hosted platform together, and who controls the sending IPs?
Yes. PowerMTA can relay some traffic to the hosted Bird Email API while delivering the rest straight from your own servers, which is the simplest way to try the hosted platform or migrate gradually without moving everything at once. PowerMTA itself runs on infrastructure you own, so those IPs stay yours to manage. Traffic you relay to the hosted platform can use our IPs there, or your own dedicated IPs, while everything else stays entirely under your control.
What are virtual MTAs?
Virtual MTAs let you run several independent sending streams inside one PowerMTA instance, each with its own IPs, reputation, and limits. Use them to manage transactional mail, marketing mail or different customers separately. Shared domains and recipient-provider policies can still affect delivery across streams.

Plan your PowerMTA deployment.

Review your sending volume, infrastructure, licensing and support requirements with our MTA team.

Send your requirements. Our team will follow up by email about licensing and deployment.

Start with one channel.
Add the others when you're ready.

A test API key is yours immediately. Production unlocks when you add a payment method and verify a sender.

Using Claude Code, Cursor, or Codex? Copy a setup prompt and your agent installs the Bird CLI and skills for you. Pick yours:

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