Standard Constants
Reference documentation for the CONSTANTS that are provided with the plugin but are not related to any specific integration.
Introduction
A collection of guides that explain what Gravity SMTP is, how it works, and how to set it up for the first time after installation.
Filters
Discover the different filter hooks available within Gravity SMTP. You can use filters to modify data to better match your particular needs.
Amazon SES
This section contains all articles specifically related to integrating your Gravity SMTP setup with the Amazon SES (Simple Email Service).
Hooks
This category contains the available hooks that are available to developers within Gravity SMTP in order to extend its functionality.
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.
Actions
Learn about the different action hooks available within Gravity SMTP. Action hooks allow you to perform additional actions when an event takes place.
Dashboard And Logs
Learn how to navigate the Gravity SMTP dashboard and review all email related activity, including logs, tracking email and details.
User Guides
Cloudflare Email
This section contains all articles specifically related to integrating your Gravity SMTP setup with the Cloudflare Email Service.
Integrations
Monitoring
Configure ralerts and monitoring tools that notify you when email delivery issues occur.
Tools And Settings
Explore the available tools, system utilities, and configuration options for managing Gravity SMTP, diagnosing issues, and controlling how your site sends email.
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
Uncategorized
Troubleshooting
Improve email deliverability with recommended best practices and access troubleshooting resources for resolving common problems.
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.
Reference
Access version history, update instructions, and reference materials for frequently asked questions and product changes.
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.
Mailtrap
This section contains all articles specifically related to integrating your Gravity SMTP setup with Mailtrap.
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
SMTP.com
This section contains all articles specifically related to integrating your Gravity SMTP setup with the SMTP.com Service.
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
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.
GRAVITYSMTP_INTEGRATION_PRIMARY
For advanced configurations and multisite setups, you can define a Primary integration for Gravity SMTP using constants.
GRAVITYSMTP_ENABLED_EXPERIMENTAL_FEATURES
The GRAVITYSMTP_ENABLED_EXPERIMENTAL_FEATURES constant allows you to enable or disable experimental features in Gravity SMTP.
Alerts Constants
When set, these optional constants will override settings for the Alerts feature.
How To Send Emails From An Alias In Google / Gmail
This article explains configuring Gravity SMTP to send emails using a Gmail alias from a Google / Gmail account.