SMTP Test Tool

Verify your SMTP server settings and ensure your email delivery is working properly

Test Results

Success

How to Use the SMTP Test Tool

Follow these simple steps to test your SMTP server configuration

1

Enter SMTP Details

Fill in your SMTP server address, port, and authentication credentials

2

Set Email Addresses

Specify the from and to email addresses for the test

3

Run the Test

Click the test button and wait for the results

Frequently Asked Questions

Find answers to common questions about SMTP testing

What is an SMTP server?

SMTP (Simple Mail Transfer Protocol) is the standard protocol for sending emails across the Internet. An SMTP server is a computer or service that handles sending, receiving, and relaying outgoing mail between email senders and receivers.

Why should I test my SMTP server?

Testing your SMTP server helps ensure that your email delivery system is working correctly. It can identify authentication issues, port blocking, or configuration problems that might prevent your emails from being delivered.

What are common SMTP ports?

The most common SMTP ports are:

  • 25 - Default SMTP port (often blocked by ISPs)
  • 587 - Default mail submission port (with TLS)
  • 465 - SSL encrypted SMTP port
  • 2525 - Alternative port when others are blocked

Is my SMTP login information secure?

Yes, all SMTP tests are performed directly from your browser. Your credentials are not stored on our servers and are only used for the test connection.

What does "Connection timed out" mean?

This error typically means that our tool couldn't establish a connection to your SMTP server. Possible causes include:

  • The server address is incorrect
  • The server is not responding
  • The port is blocked by a firewall
  • The server is not accessible from the Internet