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. gay follado por perro y queda abotonado video zoofilia full
View full certificate chains including protocol version, cipher suite, issuer details, validity dates, and SHA-256 fingerprints. One of the most common yet underdiagnosed drivers
24-code error database with actionable troubleshooting hints. Port connectivity testing detects ISP blocking, firewall issues, and DNS failures. While they likely are happy to see you,
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.
One of the most common yet underdiagnosed drivers of behavioral change is pain. A dog that suddenly becomes aggressive when touched near its back may not be “dominant” or “stubborn”; it may be suffering from osteoarthritis or intervertebral disc disease. A cat that begins urinating outside the litter box is often assumed to be “spiteful,” but in veterinary behavior clinics, the leading cause is feline interstitial cystitis—a painful inflammatory condition exacerbated by stress.
Incorporating behavioral knowledge into veterinary practice has numerous benefits. Firstly, it enables veterinarians to provide more comprehensive care for animals, addressing both physical and mental health needs. Secondly, it improves animal welfare by recognizing and addressing behavioral needs and providing enrichment activities to promote mental and physical well-being.
While they likely are happy to see you, the science of animal behavior tells us that animal communication is far more nuanced than a simple tail wag or a purr. As veterinarians and behaviorists often note, misunderstandings in "pet language" are some of the leading causes of behavioral issues—and even accidental bites.
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
One of the most common yet underdiagnosed drivers of behavioral change is pain. A dog that suddenly becomes aggressive when touched near its back may not be “dominant” or “stubborn”; it may be suffering from osteoarthritis or intervertebral disc disease. A cat that begins urinating outside the litter box is often assumed to be “spiteful,” but in veterinary behavior clinics, the leading cause is feline interstitial cystitis—a painful inflammatory condition exacerbated by stress.
Incorporating behavioral knowledge into veterinary practice has numerous benefits. Firstly, it enables veterinarians to provide more comprehensive care for animals, addressing both physical and mental health needs. Secondly, it improves animal welfare by recognizing and addressing behavioral needs and providing enrichment activities to promote mental and physical well-being.
While they likely are happy to see you, the science of animal behavior tells us that animal communication is far more nuanced than a simple tail wag or a purr. As veterinarians and behaviorists often note, misunderstandings in "pet language" are some of the leading causes of behavioral issues—and even accidental bites.
Verify SMTP servers, test API providers, inspect TLS certificates, and diagnose delivery issues. No cost, no limits.