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. Stronghold Crusader Extreme V1 3.1 E Trainer
View full certificate chains including protocol version, cipher suite, issuer details, validity dates, and SHA-256 fingerprints. It typically provides standard cheats such as infinite
24-code error database with actionable troubleshooting hints. Port connectivity testing detects ISP blocking, firewall issues, and DNS failures. Why Use a Trainer for the "Extreme" Version
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.
It typically provides standard cheats such as infinite gold, infinite wood/stone/food, and instant building. Some versions also target the unique "Tactical Powers" (the power bar on the right side of the screen) used in the Extreme version.
In Extreme mode, you can instantly refill your power bar to use special tactical abilities like arrow volleys or reinforcements repeatedly. Why Use a Trainer for the "Extreme" Version?
Stronghold Crusader Extreme is a popular real-time strategy game that has been entertaining gamers for years. Developed by Firemonkeys Studios and published by THQ, this game is an enhanced version of the original Stronghold Crusader, with new features, improved graphics, and exciting gameplay. For gamers who want to take their experience to the next level, a trainer can be a valuable tool. In this article, we'll explore the Stronghold Crusader Extreme V1 3.1 E Trainer and how it can enhance your gaming experience.
Community signals and reputation
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
It typically provides standard cheats such as infinite gold, infinite wood/stone/food, and instant building. Some versions also target the unique "Tactical Powers" (the power bar on the right side of the screen) used in the Extreme version.
In Extreme mode, you can instantly refill your power bar to use special tactical abilities like arrow volleys or reinforcements repeatedly. Why Use a Trainer for the "Extreme" Version?
Stronghold Crusader Extreme is a popular real-time strategy game that has been entertaining gamers for years. Developed by Firemonkeys Studios and published by THQ, this game is an enhanced version of the original Stronghold Crusader, with new features, improved graphics, and exciting gameplay. For gamers who want to take their experience to the next level, a trainer can be a valuable tool. In this article, we'll explore the Stronghold Crusader Extreme V1 3.1 E Trainer and how it can enhance your gaming experience.
Community signals and reputation
Verify SMTP servers, test API providers, inspect TLS certificates, and diagnose delivery issues. No cost, no limits.