SMTP & Email API Test Utility
A free, native tool for testing SMTP relay servers and email API providers. Built for email administrators, developers, and IT professionals who need to quickly verify email delivery configurations.
Windows, macOS & CLI available now
Clean, intuitive interface designed for professionals. Test SMTP servers, preview HTML emails, and diagnose delivery issues.
Main Interface - SMTP Configuration
Send test emails through any SMTP server or choose from 12 integrated API providers. Inspect TLS certificates, diagnose delivery issues, and securely store credentials.
Save SMTP and API credentials securely with AES-256-GCM encryption. Master password protection keeps your credentials safe between sessions.
View full certificate chains including protocol version, cipher suite, issuer details, validity dates, and SHA-256 fingerprints.
24-code error database with actionable troubleshooting hints. Port connectivity testing detects ISP blocking, firewall issues, and DNS failures.
Compose in plain text or HTML with auto-detection. Live preview with rendered and raw source views. 6 preloaded templates included.
One-click sending via SendGrid, Mailgun, Amazon SES, Postmark, Brevo, and 7 more providers with built-in authentication handling.
No analytics, no tracking, no data collection. Your credentials stay local. App Sandbox enabled for maximum security.
One-click API-based sending with all major email service providers. Authentication handled automatically.
: Built with an updated PCB and new adapters, ensuring steady operation during intensive tasks like ECU resetting or immobilizer removal.
: He installed Adobe Reader XI from the software package, a necessary component for the interface to render technical diagrams.
: Includes newer auths like AUTH-0028-1 (Renesas V850) and AUTH-0028-2 (Renesas SuperH). No Dongle Required xprog 612 software top download
Check that you are using a high-quality USB cable. The ones provided in the box are often thin and lose connection easily.
ST M35080 authorization to read, write, and erase devices to their delivery state. : Built with an updated PCB and new
Ensure your USB security dongle is plugged in and the driver is correctly installed in Device Manager.
This usually means either Adobe Reader 11 ( AdbeRdr11000_zh_CN.exe ) was not installed or the registry patch wasn't applied correctly. Re-install Adobe Reader, re-apply the registry file, then try launching xprogdesktop.exe again. No Dongle Required Check that you are using
When working with automotive electronic control units (ECUs), immobilizers, and dashboard microcontrollers, the series remains a cornerstone tool for professional locksmiths and auto-electricians. Securing a reliable xprog 612 software top download is essential for unlocking the full capabilities of your hardware. Version V6.12 is highly regarded for its stability, extensive authorization list, and specialized support for modern chips like Renesas RL78 and M32C.
The XPROG hardware is designed to read, write, and erase microcontrollers (MCUs) from families like Motorola, STMicroelectronics, and Renesas. Version V6.12 offers several key advantages over its predecessors:
Authorized Renesas V850 family (supports various body control modules and airbag modules). AUTH-0028-1: Authorized Renesas V850E2 family.
Live HTML Email Preview
6 Pre-loaded Email Templates
No subscriptions, no limitations, no strings attached.
Windows 10/11 (x64)
Version 1.0.7.0
macOS 14.0+ (Universal)
Version 1.08
Python (Cross-platform)
Open Source
: Built with an updated PCB and new adapters, ensuring steady operation during intensive tasks like ECU resetting or immobilizer removal.
: He installed Adobe Reader XI from the software package, a necessary component for the interface to render technical diagrams.
: Includes newer auths like AUTH-0028-1 (Renesas V850) and AUTH-0028-2 (Renesas SuperH). No Dongle Required
Check that you are using a high-quality USB cable. The ones provided in the box are often thin and lose connection easily.
ST M35080 authorization to read, write, and erase devices to their delivery state.
Ensure your USB security dongle is plugged in and the driver is correctly installed in Device Manager.
This usually means either Adobe Reader 11 ( AdbeRdr11000_zh_CN.exe ) was not installed or the registry patch wasn't applied correctly. Re-install Adobe Reader, re-apply the registry file, then try launching xprogdesktop.exe again.
When working with automotive electronic control units (ECUs), immobilizers, and dashboard microcontrollers, the series remains a cornerstone tool for professional locksmiths and auto-electricians. Securing a reliable xprog 612 software top download is essential for unlocking the full capabilities of your hardware. Version V6.12 is highly regarded for its stability, extensive authorization list, and specialized support for modern chips like Renesas RL78 and M32C.
The XPROG hardware is designed to read, write, and erase microcontrollers (MCUs) from families like Motorola, STMicroelectronics, and Renesas. Version V6.12 offers several key advantages over its predecessors:
Authorized Renesas V850 family (supports various body control modules and airbag modules). AUTH-0028-1: Authorized Renesas V850E2 family.
Verify SMTP servers, test API providers, inspect TLS certificates, and diagnose delivery issues. No cost, no limits.