Getting Started
Amazon SES
This section contains all articles specifically related to integrating your Gravity SMTP setup with the Amazon SES (Simple Email Service).
Standard Constants
Reference documentation for the CONSTANTS that are provided with the plugin but are not related to any specific integration.
Hooks
This category contains the available hooks that are available to developers within Gravity SMTP in order to extend its functionality.
User Guides
Constants
This category contains a list of the constants that can be set within the wp-config.php file of your WordPress installation.
Brevo
This section contains all articles specifically related to integrating your Gravity SMTP setup with the Brevo mail sending service.
Elastic Email
This section contains all articles specifically related to integrating your Gravity SMTP setup with Elastic Email
Integrations
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.
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.
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
SMTP2GO Constants
Constants available for the Gravity SMTP SMTP2GO Integration.
MailerSend Settings Reference
This quick reference guide lists all settings related to the MailerSend integration in Gravity SMTP and briefly describes their purpose.
Obtaining Your MailerSend API Token
This article outlines steps for generating a new API token in your MailerSend account.
Verify Your Sending Domain In MailerSend
This article outlines the steps for adding domains to your MailerSend account and verifying them with DNS records.
MailerSend Constants
Constants available for the Gravity SMTP MailerSend Integration.
Connecting To MailerSend
This article shows you the steps required to integrate Gravity SMTP on your website with the MailerSend service
Using Constants To Set Primary And Backup Integrations
Prevent unwanted configuration changes by locking primary and backup integrations with constants.
Gravity SMTP Integration Slugs
Gravity SMTP integrations use lowercase reference slugs without spaces or special characters.
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.
GRAVITYSMTP_INTEGRATION_BACKUP
For advanced configurations and multisite setups, you can define a Backup integration for Gravity SMTP using constants.