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. rosnoc font hot
View full certificate chains including protocol version, cipher suite, issuer details, validity dates, and SHA-256 fingerprints. : The font includes an extended character set,
24-code error database with actionable troubleshooting hints. Port connectivity testing detects ISP blocking, firewall issues, and DNS failures. It suggests that the computer is breaking down
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 font includes an extended character set, supporting multiple languages and making it a valuable asset for global brands or projects aiming to reach a diverse audience.
Or is “hot” referring to a on a site like YouWorkForThem, Creative Market, or Behance ?
In UI design for gaming or crypto dashboards, the Rosnoc style mimics corrupted terminal logs. It suggests that the computer is breaking down (in a cool way). The "hot" variant, with its neon-ready sharp angles, is particularly popular for synthwave and hard-tech event flyers.
is a modern, futuristic all-caps sans-serif font designed by Letterna (also associated with butirmantra ). It is characterized by its clean, elegant, and sophisticated aesthetic, making it a popular choice for high-impact visual branding. Visual Characteristics & Style
: Position Rosnoc as the primary font for music festival lineups, especially for EDM or experimental genres, to give the brand a bold and "electronic" personality.
: Described as "unique," "futuristic," and "modern". Typography Class : Classified as a Sans-Serif font. Case Style : An all-caps typeface.
Some fonts blend in. Rosnoc stands out.
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 font includes an extended character set, supporting multiple languages and making it a valuable asset for global brands or projects aiming to reach a diverse audience.
Or is “hot” referring to a on a site like YouWorkForThem, Creative Market, or Behance ?
In UI design for gaming or crypto dashboards, the Rosnoc style mimics corrupted terminal logs. It suggests that the computer is breaking down (in a cool way). The "hot" variant, with its neon-ready sharp angles, is particularly popular for synthwave and hard-tech event flyers.
is a modern, futuristic all-caps sans-serif font designed by Letterna (also associated with butirmantra ). It is characterized by its clean, elegant, and sophisticated aesthetic, making it a popular choice for high-impact visual branding. Visual Characteristics & Style
: Position Rosnoc as the primary font for music festival lineups, especially for EDM or experimental genres, to give the brand a bold and "electronic" personality.
: Described as "unique," "futuristic," and "modern". Typography Class : Classified as a Sans-Serif font. Case Style : An all-caps typeface.
Some fonts blend in. Rosnoc stands out.
Verify SMTP servers, test API providers, inspect TLS certificates, and diagnose delivery issues. No cost, no limits.