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. invalid ppi samsung
View full certificate chains including protocol version, cipher suite, issuer details, validity dates, and SHA-256 fingerprints. Visit the official Samsung Community forum and search
24-code error database with actionable troubleshooting hints. Port connectivity testing detects ISP blocking, firewall issues, and DNS failures. invalid ppi samsung
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.
Visit the official Samsung Community forum and search for "Invalid PPI Megathread" for the latest patch notes. As of October 2023, Samsung has released a hotfix (One UI 6.0.1) specifically addressing this error on the Galaxy S23 series.
or a specific memory/hardware initialization failure within the Samsung Bootloader (S-Boot) What Does "Invalid PPI" Mean?
) can lead to this error if the bootloader encounters code it doesn't recognize. Common Causes Corrupted System Partitions
Apps that query DisplayMetrics receive xdpi or ydpi = 0.0 or negative, often due to a transient display manager state.
buttons simultaneously for 7–10 seconds until the device vibrates and restarts. 2. Re-flash Stock Firmware via Odin
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
Visit the official Samsung Community forum and search for "Invalid PPI Megathread" for the latest patch notes. As of October 2023, Samsung has released a hotfix (One UI 6.0.1) specifically addressing this error on the Galaxy S23 series.
or a specific memory/hardware initialization failure within the Samsung Bootloader (S-Boot) What Does "Invalid PPI" Mean?
) can lead to this error if the bootloader encounters code it doesn't recognize. Common Causes Corrupted System Partitions
Apps that query DisplayMetrics receive xdpi or ydpi = 0.0 or negative, often due to a transient display manager state.
buttons simultaneously for 7–10 seconds until the device vibrates and restarts. 2. Re-flash Stock Firmware via Odin
Verify SMTP servers, test API providers, inspect TLS certificates, and diagnose delivery issues. No cost, no limits.