SMTP-Test.com
SMTP-Test.com is a free online SMTP tester that verifies SMTP connections, tests mail servers, and diagnoses email delivery issues for services like Gmail, Office 365, SendGrid, and custom SMTP servers.
SMTP-Test.com is productivity software teams evaluate for developer tools. Use this page to review pricing, integration signals, and the best alternatives before you commit.
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Quick Overview
Best for: Developer Tools
What it does
Productivity software for decision-makers comparing workflow fit and alternatives.
Best fit
Developer Tools
Pricing snapshot
Free
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SMTP-Test.com
SMTP-Test.com provides a free online SMTP testing tool designed to verify email server configurations before deployment. It helps users test SMTP connections, check server settings, and validate SMTP relay setups. The tool supports popular SMTP services such as Gmail, Microsoft 365, Amazon SES, and SendGrid, offering comprehensive diagnostics to ensure reliable email delivery. It is ideal for IT professionals and administrators managing email infrastructure who need to troubleshoot and maintain SMTP servers.
One-click SMTP server test with real-time protocol logs that allows users to test any outgoing email setup quickly without signup, providing instant feedback to fix login, security, or connection issues without technical expertise.
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Claim this listingKey Features
Comprehensive SMTP connection testing
Tests SMTP server connections thoroughly to ensure proper setup.
Real-time server response monitoring
Monitors server responses instantly to provide immediate feedback.
Detailed diagnostic reporting
Generates detailed reports on SMTP server status and issues.
Support for various SMTP configurations
Supports multiple SMTP providers including Gmail, Office 365, Amazon SES, and SendGrid.
Instant feedback on server settings
Provides quick validation of SMTP credentials, ports, and security settings.
Pricing
The SMTP test tool is completely free to use with no paid tiers.
Use Cases
SMTP Server Configuration Verification
Verify SMTP server settings before deploying to production to avoid email delivery failures.
Email Delivery Issue Diagnosis
Diagnose common email issues such as authentication failures, connection timeouts, and relay access problems.
SMTP Relay Testing
Test SMTP relay configurations and mail server routing to ensure proper message delivery.
Security and Port Accessibility Checks
Check connection security protocols like STARTTLS and TLS and verify port accessibility.
Integrations
Gmail SMTP
Test Gmail SMTP server configurations including support for 2FA with app passwords.
Microsoft 365 SMTP
Verify Microsoft 365 SMTP settings using full email as username.
Amazon SES SMTP
Test Amazon SES SMTP servers with region-specific endpoints and TLS security.
SendGrid SMTP Relay
Validate SendGrid SMTP relay using API key as password.
Benefits
Limitations
Frequently Asked Questions
Are my SMTP credentials stored when I use the tool?
Can I test SMTP servers with two-factor authentication enabled?
Does the tool support testing SMTP servers from cloud providers?
Is there a cost to use the SMTP test tool?
Getting Started
- 1 Navigate to https://smtp-test.com/.
- 2 Enter your SMTP server details including host, port, and security settings.
- 3 Provide SMTP credentials temporarily for testing (credentials are not stored).
- 4 Run the test to receive real-time diagnostics and feedback.
Support
docs
Basic usage instructions are available on the website.
contact
Contact form or email available via https://smtp-test.com/contact.
API
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