Getting Started

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).

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.

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.

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.

Brevo

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

User Guides

Monitoring

Configure ralerts and monitoring tools that notify you when email delivery issues occur.

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.

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.

Emailit

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

Reference

Access version history, update instructions, and reference materials for frequently asked questions and product changes.

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.

Troubleshooting

Improve email deliverability with recommended best practices and access troubleshooting resources for resolving common problems.

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

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.

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.