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. While standard lockers simply "hide" files from the
View full certificate chains including protocol version, cipher suite, issuer details, validity dates, and SHA-256 fingerprints. Stealth Mode & Disguise Icons Face unlock and
24-code error database with actionable troubleshooting hints. Port connectivity testing detects ISP blocking, firewall issues, and DNS failures. Advanced Premium Functionality To get the latest exclusive
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.
While standard lockers simply "hide" files from the gallery, v56 Premium uses . This means even if someone were to browse your phone’s internal storage via a PC, your files would remain unreadable strings of code. 2. Stealth Mode & Disguise Icons
Face unlock and fingerprint scanning for instant, secure access.
Secure Your Media: Why Photo Video Locker Hide Photos Vault v56 Premium is the Ultimate Privacy Solution
. If someone attempts to log in with an incorrect PIN, the app secretly captures a selfie of the intruder along with a timestamp and the GPS location of the attempt. Advanced Premium Functionality
To get the latest exclusive version of Photo Video Locker, follow these steps:
Would you like help choosing a based on your specific privacy needs (e.g., cloud backup, decoy password, break-in alerts)?
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
While standard lockers simply "hide" files from the gallery, v56 Premium uses . This means even if someone were to browse your phone’s internal storage via a PC, your files would remain unreadable strings of code. 2. Stealth Mode & Disguise Icons
Face unlock and fingerprint scanning for instant, secure access.
Secure Your Media: Why Photo Video Locker Hide Photos Vault v56 Premium is the Ultimate Privacy Solution
. If someone attempts to log in with an incorrect PIN, the app secretly captures a selfie of the intruder along with a timestamp and the GPS location of the attempt. Advanced Premium Functionality
To get the latest exclusive version of Photo Video Locker, follow these steps:
Would you like help choosing a based on your specific privacy needs (e.g., cloud backup, decoy password, break-in alerts)?
Verify SMTP servers, test API providers, inspect TLS certificates, and diagnose delivery issues. No cost, no limits.