Filters

Discover the different filter hooks available within Gravity SMTP. You can use filters to modify data to better match your particular needs.

Actions

Learn about the different action hooks available within Gravity SMTP. Action hooks allow you to perform additional actions when an event takes place.

Hooks

This category contains the available hooks that are available to developers within Gravity SMTP in order to extend its functionality.

Standard Constants

Reference documentation for the CONSTANTS that are provided with the plugin but are not related to any specific integration.

Amazon SES

This section contains all articles specifically related to integrating your Gravity SMTP setup with the Amazon SES (Simple Email Service).

Getting Started

Brevo

This section contains all articles specifically related to integrating your Gravity SMTP setup with the Brevo mail sending service.

Constants

This category contains a list of the constants that can be set within the wp-config.php file of your WordPress installation.

User Guides

Integrations

Elastic Email

This section contains all articles specifically related to integrating your Gravity SMTP setup with Elastic Email

Developer

This category contains documentation related to developer-specific use cases of the Gravity SMTP plugin. The items contained here are not required for normal operation of Gravity SMTP.

Emailit

This section contains all articles specifically related to integrating your Gravity SMTP setup with Emailit

Google / Gmail

This section contains all articles specifically related to integrating your Gravity SMTP setup with the Google / Gmail to send transactional emails.

Mailchimp Transactional

This section contains all articles specifically related to integrating your Gravity SMTP setup with the Mailchimp Transactional.

MailerSend

This section contains all articles specifically related to integrating your Gravity SMTP setup with MailerSend

Mailgun

This section contains all articles specifically related to integrating your Gravity SMTP setup with the Sinch Mailgun mail sending service.

Mailjet

This section contains all articles specifically related to integrating your Gravity SMTP setup with the Mailjet sending service.

Microsoft 365 / Outlook

This category includes documentation related to integrating Gravity SMTP with a Microsoft 365 account outgoing email service.

Postmark

This section contains all articles specifically related to integrating your Gravity SMTP setup with the Active Campaign's Postmark mail sending service.

Resend

This section contains all articles specifically related to integrating your Gravity SMTP setup with Resend

SendGrid

This section contains all articles specifically related to integrating your Gravity SMTP setup with the Twilio Sendgrid mail sending service.

SMTP2GO

This section contains all articles specifically related to integrating your Gravity SMTP setup with SMTP2GO

SparkPost

This section contains all articles specifically related to integrating your Gravity SMTP setup with the SparkPost sending service.

Zoho Mail

This section contains all articles specifically related to integrating your Gravity SMTP setup with the Zoho Mail sending service.

Articles

Connecting to Emailit

Overview of Emailit Integration settings and connection instructions.

Adding and Authenticating a Domain in Emailit

Adding and verifying a sending domain inside your Emailit account is mandatory before you can start relaying messages through the Gravity SMTP Emailit Integration.

Obtaining your Emailit API Key

This article outlines the steps for generating a new API key from within your Emailit account.

Emailit Settings Reference

This quick reference guide lists all settings related to the Emailit integration in Gravity SMTP and briefly describes their purpose.

Emailit Constants

Constants available for the Gravity SMTP Emailit Integration.

gravitysmtp_after_email_suppressed

Fires after an email has been successfully suppressed in the Gravity SMTP suppression list. The gravitysmtp_after_email_suppressed action allows you to perform custom logic after adding an email to the suppression database.

gravitysmtp_abort_email_suppression

The gravitysmtp_abort_email_suppression filter prevents developers from adding an email to the suppression list.

gravitysmtp_delete_log_on_deactivate

The gravitysmtp_delete_log_on_deactivate filter allows developers to control whether the debug log should be deleted when debug logging is disabled.

Configuring a Gravity SMTP Integration Using Constants

This article covers the necessary constants for enabling integrations using constants.

Updating Gravity SMTP

Here’s how to keep Gravity SMTP secure and reliable by staying on top of regular updates