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. Korea-A Korean Girl Gets Raped In A Car - Real ...
View full certificate chains including protocol version, cipher suite, issuer details, validity dates, and SHA-256 fingerprints. : Share the positive outcome, such as recovery,
24-code error database with actionable troubleshooting hints. Port connectivity testing detects ISP blocking, firewall issues, and DNS failures. : Share the positive outcome
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.
: Share the positive outcome, such as recovery, finding peace, or achieving a sense of empowerment.
Every story shared and every campaign launched is a brick in the wall against silence. By amplifying these voices, we ensure that the light of awareness eventually reaches every corner where silence still lingers.
: Survivor advocacy has successfully pushed for increased research funding and patient-centric treatment protocols by highlighting gaps in existing healthcare systems. Global Impact
Survivors should have total control over how their story is told and where it is shared.
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
: Share the positive outcome, such as recovery, finding peace, or achieving a sense of empowerment.
Every story shared and every campaign launched is a brick in the wall against silence. By amplifying these voices, we ensure that the light of awareness eventually reaches every corner where silence still lingers.
: Survivor advocacy has successfully pushed for increased research funding and patient-centric treatment protocols by highlighting gaps in existing healthcare systems. Global Impact
Survivors should have total control over how their story is told and where it is shared.
Verify SMTP servers, test API providers, inspect TLS certificates, and diagnose delivery issues. No cost, no limits.