How to Set up Postman SMTP on WordPress

In October 2017, the popular Post SMTP plugin, with 100k active installs, was removed from the WordPress repository due to an XSS vulnerability.

This news spread like wildfire. The plugin had not just been removed because of the vulnerability — it had also not been updated in the last sixteen months, making it incompatible with the latest release.

Some security researchers even tried, unsuccessfully, to contact the plugin's author. While Jason Hendriks, the man behind the plugin, had created an excellent tool for WordPress users, he was unable to maintain the plugin later.

As a WordPress developer and active user of Postman SMTP, I decided to fork the plugin so that all of Jason's hard work didn't just end up in the bin. I have named the fork "Post SMTP Mailer/Email Log", and you can get it from the WordPress repository. Within a few days, the Post SMTP plugin got more than thousands of active installs and now the plugin has more than 200,000 active installations.

Let me take you to a step-by-step guide on setting up the Post SMTP WordPress plugin with Gmail/Google Apps and 0Auth so that Postman SMTP users and others can set it up properly.

Step 1: Install Post SMTP Plugin

Step 2: Activate Post SMTP Plugin

Step 3: Troubleshooting Screen

Step 4: Start The Wizard

Step 5: Gmail SMTP Server

Step 6: Run Connectivity Test

Step 7: Connect to Mail Server

Step 8: Client ID and Client Secret

Step 9: Gmail API in Google API Console

Step 10: Create Credential Type

Step 11: Add Copy Client ID and Client Secrett

Step 12: Grant Permission with Google

Step 13: Send a Test Email

Final Words!

I hope this article helped you learn how to set up and configure post SMTP on WordPress for free. This is a step-by-step guide where I've covered thirteen steps to demonstrate the process.

If you have any questions or queries, feel free to ask any time in the comment section below.