Salesforce Email Limits

Salesforce limits number of inbound and outbound emails that can be received and sent from Salesforce API or Apex. Here is the summary of email limits imposed on the platform.

Outbound Email Limits

  • You can send single emails to a maximum of 5,000 external email addresses per day based on Greenwich Mean Time (GMT). Emails sent to internal users, person accounts, contacts and leads are not counted toward the 5,000 limit. The single and mass email limits don't take unique addresses into account, meaning sending multiple emails to same address counts as multiple toward limits.
  • You can specify up to 100 recipients for the To field and up to 25 recipients for the CC and BCC fields in each SingleEmailMessage.
  • If you use SingleEmailMessage to email your org’s internal users, specifying the user’s ID in setTargetObjectId means the email doesn’t count toward the daily limit. However, specifying internal users’ email addresses in setToAddresses means the email does count toward the limit.
  • You can send mass emails only to contacts, person accounts, leads, and your org’s internal users.
  • The total number of sendEmail methods that can be invoked from a single Apex class is 10.

In Developer Edition orgs and orgs evaluating Salesforce during a trial period, you can send mass email to no more than 10 external email addresses per day. This lower limit doesn’t apply if your org was created before the Winter ’12 release and already had mass email enabled with a higher limit. Additionally, your org can send single emails to a maximum of 15 email addresses per day.

Inbound Email Limits

  • The total number of email that can be received and processed is number of user licenses multiplied by 1,000 with maximum of 1,000,000.
  • Salesforce limits the total number of messages that all email services combined, including On-Demand Email-to-Case, can process daily. Messages that exceed this limit are bounced, discarded, or queued for processing the next day, depending on how you configure the failure response settings for each email service.

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