Email On-Prem
Scale your sending with Momentum MTA
Customize and scale your email sending with Bird's powerful Momentum MTA.
Powerful email infrastructure
Whatever your tech stack looks like, and no matter what your sending requirements are, Momentum can be tailored to fit your business.
International support
Bird's the first commercial MTA to provide SMTPUTF8 support, allowing emails with Unicode characters in mail header fields. Reach audiences worldwide with comprehensive language support.
Control your sending workflow
The brain of the platform lets you develop customized workflow rules. Support your unique business processes with flexible policies. Create tailored sending strategies.
Enterprise-grade protection
TLS encryption ensures compliance with industry standards and improved brand protection by securing emails during transport. Supporting the latest SMTP authentication and accreditation techniques.
Lightning-fast delivery
Send messages at lightning speed and extraordinarily high volumes, according to your precise instructions, ensuring reliable email delivery at scale.
Outbound controls
Control the way messages are sent: mail is segregated according to your rules, with individual delivery parameters that adjust dynamically based on deliverability results.
Real-time monitoring
The Intelligence Router provides instant visibility across all data sources with real-time alerts and dynamic delivery adjustments for optimal performance.
Adaptive Delivery keeps your mail moving.
Every mailbox provider pushes back differently, throttling, deferring, or rejecting mail when you send too fast or your reputation slips. Momentum reads those signals as they happen and adjusts on its own: slowing connections to a provider that's straining, holding messages to retry later, or pausing a stream until an issue clears, then resuming. You reach the inbox by respecting each provider's limits instead of hammering them, and your team can see exactly what was throttled and why. It's the same deliverability discipline behind the hosted Bird Email API, running on infrastructure you operate.
Run it wherever you need to.
Momentum runs on your own hardware, on any major cloud, or split across both. Keep message generation in your data center for control or compliance and burst to the cloud for peak load, or move the whole operation to the cloud and back as your needs change. Because you own the deployment, there is no vendor lock-in and no rip-and-replace to get started.
Frequently asked questions.
Everything you need to know
What is Momentum MTA and how does it scale?+
How does Momentum ensure deliverability?+
What security features are included?+
How does international support work?+
What customization options are available?+
How does real-time monitoring work?+
What is Adaptive Delivery?+
Can I run Momentum in the cloud, or only on-premises?+
Is Momentum still actively developed?+
The rest of the email toolkit
Specialist email tools, plus the hosted platform they complement.
Prefer email without the infrastructure?
The hosted Bird Email API gives you sending, deliverability, dedicated IPs, suppression, and analytics out of the box, the same email expertise as Momentum, without running the servers yourself.