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
Email Routing
This article explains how to use Email Routing to create conditional rules that direct emails to different providers based on sender address, email source, and other attributes.
What Is WP-Cron and How Does It Affect Gravity SMTP?
Gravity SMTP relies on WP-Cron, the event scheduler included with WordPress, to power certain time-based features. The Email Activity Digest and Alerts features both depend on WP-Cron to run on their configured schedules.
What is Gravity SMTP?
Gravity SMTP is a WordPress plugin from Rocketgenius, the team behind Gravity Forms and Gravity Flow, that helps you reliably send and track outgoing emails from your WordPress website.
gravitysmtp_on_primary_failure
The gravitysmtp_on_primary_failure action lets you run custom code when the primary mail sending attempt fails.
Obtaining Your SMTP.com API Key
Instructions on the required steps of getting an API key for connecting with the SMTP.com API.
SMTP.com Constants
When set, these optional constants will override settings for the SMTP.com integration in Gravity SMTP. Default values are shown.
Connecting to SMTP.com
This article shows you the steps required to integrate Gravity SMTP on your website with SMTP.com. SMTP.com offers transactional email delivery for websites with outgoing email needs.
Adding and Verifying a Domain in SMTP.com
This article outlines steps for adding and verifying a domain in your SMTP.com account.
Getting a Cloudflare Email API Key
This article outlines the steps to generate a new API Token from your Cloudflare account.
Connecting to Cloudflare Email
This article provides the steps required to connect Gravity SMTP on your website with Cloudflare Email service.