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Email-to-Case Limits and Limitations
Email-to-Case’s on-demand service keeps email traffic outside your network’s firewall and refuses emails that are too large.
Required Editions
| View supported editions. |
| Limit | Value |
|---|---|
| The maximum number of emails that all email services combined, including Email-to-Case, can process daily | The number of user licenses multiplied by 1,000, up to a daily maximum of 1,000,000 for all email services combined. For example, if you have 10 licenses, your org can process up to 10,000 email messages a day for all email services, including Email-to-Case. Messages that exceed this limit are bounced, discarded, or queued for processing the next day, depending on how you configure failure response settings for each email service. |
| Daily inbound email-to-case limit | 250 emails per case per day. This is calculated on a rolling basis by looking back at the past 24 hours when processing each new email. |
| Maximum size of inbound emails, including header, message, and attachments | Under 25 MB |
| Maximum size of outbound emails, excluding headers, attachments, and inline images | 384 KB |
| The maximum email length before an inbound or outbound email is truncated in the Salesforce email message record |
|
| The maximum number of emails an individual can send per hour. Each recipient counts as one email. | 250 emails |
Inbound Email Size Limits
The inbound Salesforce Email Server has limits for attachment size and total email size. When an inbound message exceeds 35 MB, either the original sender of the email or the routing address receives a Mailer-Daemon bounce. Whether the sender or the routing address receives the Mailer-Daemon bounce depends on how the routing address redirects the email to the Salesforce Email Services Address.
Due to email encoding, total email size when delivered can inflate up to 33%. Thus, the inbound attachment size can range up to 25 MB, depending on other aspects of the email.
