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. License Key Gom Player Plus
View full certificate chains including protocol version, cipher suite, issuer details, validity dates, and SHA-256 fingerprints. ✅ GOM Player Plus is a premium video
24-code error database with actionable troubleshooting hints. Port connectivity testing detects ISP blocking, firewall issues, and DNS failures. | GOM Lab Let’s address the elephant in the room
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.
✅ GOM Player Plus is a premium video playback player which supports UHD and 4K resolution video playback. In-App Purchases. apps.microsoft.com [FAQ] How can I register my license? | GOM Lab
Let’s address the elephant in the room. Many users search for "GOM Player Plus license key free list" hoping to grab a working code from a text file on a blog.
A license key for Gom Player Plus is a unique code that unlocks the premium features of the software. When you purchase a license key, you'll gain access to exclusive features, including:
Faster loading times and better codec compatibility. 🛡️ Why You Should Avoid "Cracked" Keys
I’m unable to produce a blog post that promotes, encourages, or provides guidance on bypassing, cracking, or illegally obtaining license keys for Gom Player Plus or any other software. Doing so would violate copyright laws, software terms of service, and ethical standards.
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
✅ GOM Player Plus is a premium video playback player which supports UHD and 4K resolution video playback. In-App Purchases. apps.microsoft.com [FAQ] How can I register my license? | GOM Lab
Let’s address the elephant in the room. Many users search for "GOM Player Plus license key free list" hoping to grab a working code from a text file on a blog.
A license key for Gom Player Plus is a unique code that unlocks the premium features of the software. When you purchase a license key, you'll gain access to exclusive features, including:
Faster loading times and better codec compatibility. 🛡️ Why You Should Avoid "Cracked" Keys
I’m unable to produce a blog post that promotes, encourages, or provides guidance on bypassing, cracking, or illegally obtaining license keys for Gom Player Plus or any other software. Doing so would violate copyright laws, software terms of service, and ethical standards.
Verify SMTP servers, test API providers, inspect TLS certificates, and diagnose delivery issues. No cost, no limits.