Constants

Standard Constants

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

Articles

GRAVITYSMTP_TEST_MODE

The GRAVITYSMTP_TEST_MODE constant in Gravity SMTP enables or disables test mode.

Mailchimp Transactional Constants

Constants available for the Mailchimp Transactional integration.

MailerSend Constants

Constants available for the Gravity SMTP MailerSend Integration.

Mailgun Constants

Constants available for the Mailgun Integration.

Mailjet Constants

Constants available for the Gravity SMTP Mailjet Integration.

Mailtrap Constants

When set, these optional constants will override settings for the Mailtrap Integration in Gravity SMTP. Default values are shown.

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.

Postmark Constants

Constants available for the Postmark Integration.

Resend Constants

Constants available for the Gravity SMTP Resend Integration.