SMTP Test Tool

Run an SMTP test using our online SMTP checker. Our tool helps you test a mail server using the hostname. Fill in the fields below to check SMTP setup of a server.

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SMTP Checker - Test SMTP Server Online

Our online SMTP checker helps you check whether a host's SMTP settings are working correctly. You can use it to test mail servers without installing any software. 

SMTP online test is useful when setting up email for a website or other business application. The tool supports common SMTP ports, authentication, and secure connections.

How to Use the SMTP Test Tool?

Using our SMTP mail server checker is very easy. Follow these steps to check SMTP status of a mail server with our tool. 

1. Enter Host

Begin by filling in the hostname field. Enter the hostname provided to you by the email server provider.

2. Enter Port Number

Select an SMTP port shown by the tool or enter a custom port number used by the server you want to check. If you do not know which port to use, check the SMTP settings from your email provider.

3. Enter the Email

Inside the ‘From Email’ field, enter the email address that you want to use as the sender. Make sure the email address matches the requirements of your SMTP provider.

Next, in the ‘To Email’ field, enter the email address that should receive the test email. Use an active email address that you can check after the test.

4. Add SMTP Authentication

If you are testing a server that requires authentication, check the ‘Use Authentication’ field. Then enter your username and password. However, if authentication is not required, you can leave the field empty and unchecked.

5. Enable a Secure Connection

Some SMTP servers require a secure connection. If your provider requires one, select Use Secure Connection. Then choose the required Secure Type (TLS or SSL) from the dropdown. 

Run the Test

After you enter all the required details, click ‘Test SMTP’. he tool tests the SMTP connection using the information you provided and shows the result.

What Does the SMTP Test Result Mean?

The tool shows one of two results after the test: 

  1. SMTP Test Passed 
  2. SMTP Test Failed

A passed result means the SMTP server accepted the connection and sent the test message. Your SMTP settings work for the test.

A failed result means the tool could not complete the SMTP test. In such a case, check your:

  • SMTP host
  • Port
  • Secure settings
  • Login details

Fix the issue and run the test again. 

Why Test Your SMTP Server?

Testing your SMTP server can help you confirm that your email setup works before you use it for important messages.

  • Check SMTP Settings: Test the host and port to make sure you use the correct server details.
  • Test Authentication: Check your SMTP login details when your mail server requires authentication.
  • Check Security: Test your selected security settings with your SMTP server.
  • Test Email Setup: Developers can test SMTP settings before connecting email to a new website or application.
  • Troubleshoot Problems: If your website or application cannot send emails, an SMTP test can help you check whether your SMTP settings work.

Who Can Use SMTP Tester

Our SMTP tester helps anyone who needs to check an email server setup.

  • Developers: Test SMTP before adding email to an application.
  • Website owners: Check SMTP settings for website emails.
  • IT administrators: Test mail server settings after making changes.
  • Businesses: Check email settings before launching automated emails.
  • System administrators: Test SMTP connections for different services.

Frequently Asked Questions

What Is SMTP?

SMTP stands for Simple Mail Transfer Protocol. It is the standard protocol used to send email messages. When you send an email from a website or email client, SMTP moves the message to the mail server. The mail server then handles the next steps needed to deliver the email.

What happens if SMTP settings are incorrect?

If you enter incorrect SMTP settings, your website or application may fail to send these emails. An SMTP test can help you check your setup before you rely on it.

How to test an SMTP mail server?

Enter your SMTP host and port in the SMTP checker. Then enter the From and To email addresses. If your server needs authentication or a secure connection, add those details and then run the test to check SMTP settings.

Can I Test SMTP Without Authentication?

Yes, if the SMTP server allows connections without authentication. If authentication is required, you must provide the correct username and password to complete the test.