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. insect prison save full
View full certificate chains including protocol version, cipher suite, issuer details, validity dates, and SHA-256 fingerprints. Many players search for "save full" because they
24-code error database with actionable troubleshooting hints. Port connectivity testing detects ISP blocking, firewall issues, and DNS failures. insect prison save full
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.
Many players search for "save full" because they want to know how to maximize their 90 seconds of film. To ensure every frame counts:
This is the gold standard. A quick zap to the insect or the cage mechanism usually frees the player instantly.
Once caught, you are essentially removed from play.
Most Content Warning saves are located in Users/[YourName]/AppData/LocalLow/Landfall Games/Content Warning .
Ironically, filming a teammate in peril is "Gold" for views. "Saving" them while the camera is rolling is the ultimate way to fill your progress bar. 2. How to "Save" Your Run
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
Many players search for "save full" because they want to know how to maximize their 90 seconds of film. To ensure every frame counts:
This is the gold standard. A quick zap to the insect or the cage mechanism usually frees the player instantly.
Once caught, you are essentially removed from play.
Most Content Warning saves are located in Users/[YourName]/AppData/LocalLow/Landfall Games/Content Warning .
Ironically, filming a teammate in peril is "Gold" for views. "Saving" them while the camera is rolling is the ultimate way to fill your progress bar. 2. How to "Save" Your Run
Verify SMTP servers, test API providers, inspect TLS certificates, and diagnose delivery issues. No cost, no limits.