API-first delivery
A concise REST interface planned around the practical needs of transactional email.
Private beta
Reliable email infrastructure for developers.
Send transactional email through a clean API or authenticated SMTP relay, with transparent delivery logs and domain-level authentication.
Built for responsible, permission-based transactional email.POST/v1/messages
{
"from": "notifications@example.com",
"to": "customer@example.net",
"subject": "Your order is ready"
}
Message status
AcceptedQueuedDelivered
The essentials
Email delivery, without the maze.
A focused foundation for product email, designed to keep integration and troubleshooting straightforward.
Authenticated SMTP relay
Submit messages from existing applications using credentials and encrypted connections.
Transparent delivery logs
Understand accepted, delivered, bounced, and rejected events without guesswork.
Domain authentication
Guidance for domain verification and correctly configuring SPF, DKIM, and DMARC.
How it works
From domain to delivery in three clear steps.
Tenvio is being shaped around a predictable workflow for small engineering teams.
Add your sending domain
Verify ownership and follow guided DNS instructions for SPF, DKIM, and DMARC.
Send via API or SMTP
Use the planned REST API for a native integration or authenticated SMTP submission for existing systems.
Monitor delivery events
Review message status and connect webhooks for delivered, bounced, and rejected events.
Private beta note: Tenvio is in active development. Availability and scope of individual features will evolve during the beta.
Developer experience
An interface that stays out of your way.
Send the information a transactional message needs, then follow its delivery lifecycle through structured events.
Illustrative API example: this planned interface documents the intended developer experience and is not a live endpoint yet.
Planned API interface
curl -X POST https://api.tenvio.email/v1/messages \ -H "Authorization: Bearer YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "from": "notifications@yourdomain.com", "to": "user@example.com", "subject": "Welcome", "text": "Your account is ready." }'
Infrastructure & security
Sensible controls from the start.
The platform is being designed with clear boundaries, authenticated access, and useful delivery diagnostics.
- TLS-protected API and SMTP connections
- Authenticated submission
- Domain verification
- SPF, DKIM, and DMARC support
- Rate limits and abuse prevention
- Monitoring and delivery diagnostics
No open relay. No ambiguity.
Submission requires authentication and is subject to operational controls intended to protect recipients and infrastructure.
Responsible email
Email people expect to receive.
Tenvio is intended for transactional and permission-based email. It is not a tool for cold outreach or unsolicited campaigns.
- Transactional and permission-based email only
- No purchased lists or credential phishing
- No malware distribution
- No open relay access
- Abuse reports are reviewed
Planned features
A transparent view of where Tenvio is heading.
Status labels describe current direction, not release commitments. No launch dates are being announced yet.
REST email APIIn development
Authenticated SMTP submissionIn development
Domain verificationPrivate beta
Delivery event logs and webhooksIn development
Inbound email routingPlanned
Reusable templatesPlanned
Team accessPlanned
SMTP/IMAP client compatibilityPlanned
FAQ
Questions, answered plainly.
What is Tenvio?
Tenvio is email infrastructure in development for developers and small SaaS teams. Its focus is responsible transactional email through a REST API or authenticated SMTP relay.
Is Tenvio available today?
Tenvio is in private beta and active development. You can request early access, but access and feature availability are currently limited.
Can I use SMTP instead of the API?
Authenticated SMTP submission is part of the planned product, making it possible to connect software that already supports SMTP. Tenvio will not operate as an open relay.
Does Tenvio support custom sending domains?
Custom sending-domain verification, with guidance for SPF, DKIM, and DMARC, is central to the planned experience.
Can Tenvio be used for marketing campaigns?
Tenvio is not positioned as a bulk marketing or cold-outreach platform. Use must be transactional or permission-based and comply with the Acceptable Use Policy.
How do I report abuse?
Email abuse@tenvio.email with the full email headers and relevant details. See the Abuse page for guidance.
Where is the infrastructure hosted?
Tenvio currently operates infrastructure in Canada. Infrastructure locations may expand as the service develops.
Help shape a simpler email platform.
Private beta access is limited while Tenvio develops its core delivery infrastructure. Tell us what you are building and how you handle transactional email today.
Request early access