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Test SMTP authentication, send an email, and troubleshoot Email issues in real-time with an SMTP tester.

25 | 2525 | 465 | 587

SMTP Test Tool - Free SMTP Checker

Use the SMTP checker to check your SMTP server's health status. The tool connects to your SMTP server & then sends an email also.

What is an SMTP?

Before performing the SMTP test with an SMTP tester, you must get to know what is SMTP and how does it work?

SMTP stands for Simple Mail Transfer Protocol. The protocol consists of commands that authenticate and direct email transfer. Commonly, SMTP is linked with IMAP or POP3. However, SMTP is the protocol for sending emails, whereas IMAP and POP3 are the protocols for retrieving or receiving emails. So in other words, SMTP is a protocol for sending emails to people.

For example, when you send an email using an email client:

  • The email travels from your device to the email server, also called the SMTP server (that server is already configured in your email client).
  • Your SMTP server then sends the message to your recipient's email server using SMTP protocol.
  • Then the email stays on the recipient's server until the recipient logs in to their email account and downloads the emails using IMAP or POP3.

Here we assume the recipient's email address is correctly spelled and still exists. But if it is misspelled and does not exist, you will receive a mail delivery failure message in your inbox.

Why use the SMTP server test tool?

Email is an essential part of the business. Among the B2B audiences, email is the third most influential source of information. Companies emphasize creating a lot of emails and newsletters. But most are not concerned about testing their email servers/services or whether they have any outbound email delivery issues. A study shows that globally, email has an inbox placement rate of about 83%. And only one in six emails get sent to the spam folder or blocked by your subscribers.

So what is the solution?

You must address the root problems related to your outbound emails. And SMTP test tool is the solution to that problem.

How the SMTP tester helps in checking your SMTP configuration by sending test mail from that SMTP host?

Before testing the SMTP server, you must have your host/mail server configuration. For that, you can use any of the following options.

  • Visit website of your email provider or SMTP delivery service for specific instructions to get SMTP configurations.
    1. Following is a list of top Email service providers:

    2. Moreover, following list includes top SMTP Email Delivery providers:

  • If you use cPanel, use the following guide to find SMTP configurations.
  • Suppose you use some other Email provider. Please contact your email/hosting provider.

After obtaining SMTP configurations, open the SMTP Test Online to test the SMTP server and adopt the following procedure to use that tool.

  1. Enter the host or IP address of your SMTP server.
  2. Enter the port. The default port is 25. However, SMTP servers use many custom ports.
  3. Enter the sender's email address.
  4. Enter the receiver's email address. The SMTP tester will send the test mail to that address.
  5. Check for "use Secured Connection" if the SMTP server needs a secure connection (SSL, TSL).
  6. Check for "use authentication" if the SMTP server needs this.
  7. Enter the "Username" and "Password" if you checked for "use authentication."
  8. Hit the "Test SMTP" button to perform the SMTP test.

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