Developer

gravitysmtp_sparkpost_send_as_transactional

This filter allows you to control whether emails sent through SparkPost are marked as transactional. It lets you override the default behavior of sending emails as transactional messages.

gravitysmtp_notifications_email_digest_frequency_options

The gravitysmtp_notifications_email_digest_frequency_options filter lets developers customize the available frequency options for the email activity digest.

Mailchimp Transactional Constants

Constants available for the Mailchimp Transactional integration.

Using Constants To Hide Your Sensitive Settings

By using constants in your site’s wp-config.php file, you can securely store this information outside the WordPress admin interface.

Gravity SMTP Integration Slugs

Gravity SMTP integrations use lowercase reference slugs without spaces or special characters.

Using Constants To Set Primary And Backup Integrations

Prevent unwanted configuration changes by locking primary and backup integrations with constants.

Configuring a Gravity SMTP Integration Using Constants

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

Google Constants

Constants available for the Gravity SMTP Google Integration.

Microsoft Constants

When set, these optional constants will override settings for the Microsoft 365 / Outlook Integration in Gravity SMTP.

PHP Mail Constants

Constants available for the PHP Mail integration.