From time to time organizations may hit their SingleEmailMessage limit. When this happens, you will see the following email message:
'SINGLE_EMAIL_LIMIT_EXCEEDED, The daily limit for the org would be exceeded by this request'
Note: This limit applies only to email messages composed and sent through the API or Apex. This is not trackable currently in 'Setup.' However, there is a convenient way to track the limits and usage for the organization, using the Workbench tool.
1. Ensure you are logged into the organization where you want to verify your limits.
2. Navigate to: https://workbench.developerforce.com/login.php
3. Accept any oauth prompts to complete authentication
4. On the 'Jump to' picklist select REST Explorer.
5. Click Select.
6. Enter in the following, replacing "XX" with the current API version: /services/data/vXX.0/limits
7. Click Execute.
8. Select the SingleEmail area to view the daily maximum and remaining calls.
000386230

We use three kinds of cookies on our websites: required, functional, and advertising. You can choose whether functional and advertising cookies apply. Click on the different cookie categories to find out more about each category and to change the default settings.
Privacy Statement
Required cookies are necessary for basic website functionality. Some examples include: session cookies needed to transmit the website, authentication cookies, and security cookies.
Functional cookies enhance functions, performance, and services on the website. Some examples include: cookies used to analyze site traffic, cookies used for market research, and cookies used to display advertising that is not directed to a particular individual.
Advertising cookies track activity across websites in order to understand a viewer’s interests, and direct them specific marketing. Some examples include: cookies used for remarketing, or interest-based advertising.