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. We're committed to providing you with the best
View full certificate chains including protocol version, cipher suite, issuer details, validity dates, and SHA-256 fingerprints. Spend 15 minutes a day replying to comments in your niche
24-code error database with actionable troubleshooting hints. Port connectivity testing detects ISP blocking, firewall issues, and DNS failures. In the rapidly evolving landscape of social media
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.
We're committed to providing you with the best possible experience. Our software comes with:
Given the considerable risks of using cracked software, focusing on legitimate, professional tools is a much safer and more effective strategy. Many platforms offer powerful Instagram analytics that comply with platform guidelines.
Spend 15 minutes a day replying to comments in your niche.
Before attempting to extract audience data or use any third-party tools, ensure you comply with Instagram's Terms of Service and usage guidelines. Unauthorized scraping or using automation tools may violate these terms.
In the rapidly evolving landscape of social media marketing and data analytics, the ability to extract and analyze Instagram audience data has become a critical asset for businesses, influencers, and researchers. This has led to the development of numerous tools designed to scrape publicly available information from the platform. One such tool that has emerged in specific digital circles is the
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
We're committed to providing you with the best possible experience. Our software comes with:
Given the considerable risks of using cracked software, focusing on legitimate, professional tools is a much safer and more effective strategy. Many platforms offer powerful Instagram analytics that comply with platform guidelines.
Spend 15 minutes a day replying to comments in your niche.
Before attempting to extract audience data or use any third-party tools, ensure you comply with Instagram's Terms of Service and usage guidelines. Unauthorized scraping or using automation tools may violate these terms.
In the rapidly evolving landscape of social media marketing and data analytics, the ability to extract and analyze Instagram audience data has become a critical asset for businesses, influencers, and researchers. This has led to the development of numerous tools designed to scrape publicly available information from the platform. One such tool that has emerged in specific digital circles is the
Verify SMTP servers, test API providers, inspect TLS certificates, and diagnose delivery issues. No cost, no limits.