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.
The Masterful Descent: A Recap of Breaking Bad (Seasons 1-4) Breaking Bad
When Breaking Bad premiered in 2008, it introduced us to Walter White (Bryan Cranston). He is a high school chemistry teacher with a pregnant wife (Skyler), a son with cerebral palsy (Walter Jr.), and a terminal lung cancer diagnosis. Season 1 poses the central moral question of the series: What is a man willing to do to provide for his family when he has nothing left to lose? Breaking Bad -Seasons 1 to 4 - Complete-
The second season of Breaking Bad, comprising 13 episodes, premiered on March 2, 2009. This season witnesses significant growth in terms of character development, plot complexity, and stakes. Walter and Jesse's partnership becomes more entrenched, and their actions attract the attention of various players in the methamphetamine trade. The Masterful Descent: A Recap of Breaking Bad
Breaking Bad Seasons 1–4 is a complete, Shakespearean fall. It transforms a meek chemist into a drug lord who poisons children, blows up nursing homes, and looks at the carnage with a smile. It is not entertainment. It is an experience—and one of the greatest storytelling achievements of the 21st century. Establishes the central moral and narrative engine of
Victor is killed by Gus with a box cutter in front of Walt and Jesse. “Get back to work.”
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
The Masterful Descent: A Recap of Breaking Bad (Seasons 1-4) Breaking Bad
When Breaking Bad premiered in 2008, it introduced us to Walter White (Bryan Cranston). He is a high school chemistry teacher with a pregnant wife (Skyler), a son with cerebral palsy (Walter Jr.), and a terminal lung cancer diagnosis. Season 1 poses the central moral question of the series: What is a man willing to do to provide for his family when he has nothing left to lose?
The second season of Breaking Bad, comprising 13 episodes, premiered on March 2, 2009. This season witnesses significant growth in terms of character development, plot complexity, and stakes. Walter and Jesse's partnership becomes more entrenched, and their actions attract the attention of various players in the methamphetamine trade.
Breaking Bad Seasons 1–4 is a complete, Shakespearean fall. It transforms a meek chemist into a drug lord who poisons children, blows up nursing homes, and looks at the carnage with a smile. It is not entertainment. It is an experience—and one of the greatest storytelling achievements of the 21st century.
Victor is killed by Gus with a box cutter in front of Walt and Jesse. “Get back to work.”
Verify SMTP servers, test API providers, inspect TLS certificates, and diagnose delivery issues. No cost, no limits.