PRO WP Mail SMTP Team
Adding a Custom Filter when using Other SMTP Setting
This snippet will help in troubleshooting steps from "SMTP Error: Could not authenticate".
Change the redirect URI when using Google App’s OAuth
If you prefer not to use the default OAuth redirect URI (connect.wpmailsmtp.com) for added security and…
Set a Custom Reply-To Email
This snippet will ensure all emails sent from your site have the same reply-to email address.…
Using an Office 365 GCC or DoD email address
For security measures, Government Community Cloud (GCC) and U.S. Department of Defense (DoD) accounts typically use…
Change the Email Summary Email Address
This snippet will allow you to specify who the email summaries should be delivered to. On…
Block URLs Inside Text Fields
This snippet will prevent Text and Textarea fields such as Single Line Text and Paragraph text…
Set a Custom Email Header
This snippet sets custom email headers to ensure you can control specific behaviors of your sent…
Defining Google Mailer Constants
This snippet will prevent users from changing WP Mail SMTP settings in your WordPress admin area…
Define the Mailgun Signing Key Constant
This snippet will allow you to define your Mailgun Signing Key constant inside your wp-config.php file…
Defining Outlook Mailer Constants
This snippet will prevent users from changing WP Mail SMTP settings in your WordPress admin area…
Fix the InvalidInternetMessageHeader Error in Outlook
This snippet will modify specific headers in your emails, which can help resolve this ‘InvalidInternetMessageHeader’ error…
Enable WP Mail SMTP Constants
This snippet will prevent users from changing WP Mail SMTP settings in your WordPress admin area…