Email Server Configuration Tester
Test IMAP, SMTP, and POP3 server configurations to verify connection settings
Email Configuration Tester
Test and validate your email server configurations for SMTP, IMAP, and POP3. Get code examples in multiple programming languages and download your configuration.
Server Configuration
Email Protocol
Email Provider
Security
Test Connection
Please fill in the server host and port to test the connection.
Code Examples & Configuration
Code Examples
Language:
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Try Now JWT CreatorWhat is Email Server Configuration Tester?
An Email Server Configuration Tester is a diagnostic tool that validates email server settings and connection parameters for IMAP, SMTP, and POP3 protocols. Our tester helps developers, system administrators, and users verify that their email server configurations are correct and functional. The tool tests various aspects of email server connectivity including hostname resolution, port accessibility, SSL/TLS encryption support, and authentication credential validation. It's invaluable for troubleshooting email setup issues, verifying server configurations before deployment, and diagnosing email delivery problems. The tester supports all major email protocols and security configurations, making it compatible with most email providers including Gmail, Outlook, Yahoo, and custom mail servers. Whether you're setting up a new email client, configuring an application to send emails, or troubleshooting existing email issues, this tool provides comprehensive testing capabilities to ensure your email infrastructure is working correctly.
When to Use Email Server Configuration Tester
Use our Email Server Configuration Tester whenever you need to verify email server settings, troubleshoot connection issues, or validate email configurations. This tool is particularly valuable when setting up new email clients or applications, migrating to new email servers, or diagnosing email delivery failures. Developers commonly use it when implementing email functionality in applications, configuring SMTP settings for automated emails, or debugging email integration issues. System administrators rely on it for verifying server configurations, testing firewall settings, and ensuring email services are accessible. It's essential when changing email providers, updating security settings, or investigating why emails aren't being sent or received properly. The tool is also helpful for end users who need to configure email clients and want to verify their settings before completing the setup process.
How to Use Email Server Configuration Tester
7 stepsSelect the email protocol you want to test (IMAP, SMTP, or POP3)
Enter the email server hostname or IP address
Specify the correct port number for your email service
Choose the appropriate security method (SSL, TLS, or None)
Enter your email credentials (username and password)
Click the test connection button to verify the configuration
Review the test results and any error messages for troubleshooting
Privacy & Security
100% SecureYour email server configurations and credentials are processed entirely within your web browser using client-side JavaScript technology. No server settings, passwords, or connection details are transmitted to our servers or stored anywhere outside your device. This ensures complete privacy and security for sensitive email configurations, corporate server settings, and authentication credentials. The tool works offline once loaded, providing an additional layer of security for confidential email system testing.
Pro Tips
7 tipsAlways use app-specific passwords instead of your main account password when testing with Gmail or similar providers
Check with your email provider for the correct server settings and port numbers before testing
Ensure your firewall or network doesn't block the email ports you're trying to test
Use SSL or STARTTLS encryption whenever possible to secure your email connections
Test both incoming (IMAP/POP3) and outgoing (SMTP) settings separately to isolate issues
Keep a record of working configurations for future reference and troubleshooting
Contact your email provider's support if tests consistently fail with correct settings
Frequently Asked Questions
5 Q&AQ1:What is the difference between IMAP, SMTP, and POP3?
IMAP (Internet Message Access Protocol) is used for receiving and managing emails on the server, keeping messages synchronized across devices. SMTP (Simple Mail Transfer Protocol) is used for sending emails. POP3 (Post Office Protocol 3) downloads emails to a single device and typically removes them from the server.
Q2:Why would I need to test email server configurations?
Testing email configurations helps diagnose connection issues, verify server settings before deploying applications, troubleshoot email client setup problems, and ensure that authentication credentials and security settings are working correctly. It's essential for debugging email delivery failures.
Q3:What information do I need to test my email server?
You'll need the server hostname or IP address, port number, protocol type (IMAP/SMTP/POP3), security method (SSL/TLS/None), and authentication credentials (username and password). These settings are usually provided by your email hosting provider or IT administrator.
Q4:Is it safe to test my email credentials with this tool?
Our tool performs connection tests entirely within your browser using client-side JavaScript. However, for maximum security, we recommend using test accounts or temporary credentials rather than your primary email credentials when testing with any online tool.
Q5:What do the different port numbers mean for email servers?
Common email ports include: SMTP (25, 587, 465), IMAP (143, 993), POP3 (110, 995). Ports 993 (IMAP), 995 (POP3), and 465 (SMTP) use SSL encryption, while 587 (SMTP) uses STARTTLS. Port 25 is often blocked by ISPs for security reasons.
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