SMTP and API,
side by side.
Modern apps can call the HTTP API; everything else can point its existing SMTP settings at Bitelio. Identical deliverability, identical pricing, nothing proprietary to adopt.
SMTP that fits your existing stack
Authentication, tracking, and strong deliverability included from the first send
Simple Configuration
Plug in your project credentials and go — any SMTP-capable app or email client connects in minutes.
Secure Connections
Connections run over TLS/SSL on ports 465 and 587, so your mail never travels in the clear.
Universal Compatibility
Outlook, Thunderbird, Apple Mail, or anything else that speaks SMTP — they all just work.
Domain Validation
Before any message is accepted, Bitelio confirms the sender domain has been verified — no manual checks.
Full Feature Support
Multiple recipients, attachments, HTML bodies, and custom headers are all covered.
Same Infrastructure
Mail sent over SMTP travels the identical delivery pipeline as API mail — tracking included.
SMTP or API?
Pick whichever fits how you build
| Feature | Traditional SMTP | Bitelio SMTP | Bitelio API |
|---|---|---|---|
| Protocol | SMTP | SMTP | HTTP/REST |
| Setup Complexity | Medium | Easy | Easy |
| Tracking & Analytics | ✗ | ✓ | ✓ |
| Works with Email Clients | ✓ | ✓ | ✗ |
| Domain Verification | Manual | Automatic | Automatic |
| Attachments | ✓ | ✓ | ✓ |
| Template Support | ✗ | ✗ | ✓ |
| Workflow Automation | ✗ | ✗ | ✓ |
Our advice: reach for the API when building modern apps that need workflow automation; reach for SMTP when connecting email clients or older systems.
Where SMTP shines
Three situations where it's the obvious choice
- 01
Legacy System Integration
Got software that already speaks SMTP? Point it at Bitelio's credentials and leave the rest of the codebase untouched.
→ Not a line of code to change - 02
Email Client Sending
Your marketing team keeps sending from Outlook, Thunderbird, or Apple Mail — no new API to learn, no new habits to build.
→ Familiar tools, zero learning curve - 03
Framework Compatibility
If a language or framework can speak SMTP, it can send through Bitelio — including older platforms with no HTTP API support.
→ One protocol, every stack
Your SMTP credentials are waiting.
Grab your credentials and send from any client or application within minutes. No credit card needed to start.