How to Check Email Deliverability Using Salesforce Apex – A Developer’s Guide

In Salesforce, ensuring that emails reach their intended recipients is crucial for user communication, workflow automation, and customer engagement. While Salesforce provides tools like Email Logs and Deliverability Settings, developers often want to programmatically check email deliverability using Apex for better control and real-time validation. Why Check Email Deliverability in Apex? Using Apex allows developers to track email send status, log delivery attempts, and debug failures within their custom code. This can be particularly helpful in scenarios such as sending confirmation emails, alerts, or workflow-based messages where reliability is essential. Key Steps to Check Email Deliverability in Apex Check Organization Deliverability Settings Before sending any emails, make sure your org’s deliverability is set to All Email (Setup → Deliverability → Access Level). If it's set to "System Email Only" or "No Access," outbound emails will not be sent. Use Messaging.SendEmailResult When sending emails in Apex, the Messaging.sendEmail() method returns a list of Messaging.SendEmailResult objects. These results tell you whether the message was accepted for delivery, though not whether it was actually delivered to the inbox. apex Copy Edit Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage(); mail.setToAddresses(new String[] { 'test@example.com' }); mail.setSubject('Test Email'); mail.setPlainTextBody('This is a test.');