Salesforce Email Field Character Limits: To, CC, BCC, From, and Subject

This article answers how many characters or addresses you can enter in Salesforce email fields, and what to do if you hit one of these limits.

Character Limits Cannot Be Increased

These limits are hardcoded and cannot be increased. Visit the Salesforce Ideas Exchange to submit an idea or promote an existing idea to have this limit potentially increased in the future.

Limits When Using Email Action Buttons with Predefined Field Values

If the email is used with an email action button that has Predefined Field Values configured for To, CC, and BCC addresses, different limits apply:

• Up to 1,300 characters per field
• Up to 48 email addresses only

Frequently Asked Questions

How many email addresses can I add across To, CC, and BCC?

You can add up to 150 email addresses total across the To, CC, and BCC fields combined, with a limit of 4,000 characters per individual field.

Why can't I add more recipients when using an email button with predefined field values?

Email action buttons with Predefined Field Values for To, CC, or BCC use a lower limit: up to 1,300 characters and 48 email addresses per field, instead of the standard 4,000-character/150-address limits.