List Email Limitations

The following limitations apply to list emails.

• List emails can contain up to 32,000 characters for the body and 3,000 characters for the subject. These limits include visible characters and other characters in the email, including markup.
• The maximum size of email messages for email services is 35 MB and includes the email header, subject, body, and attachments. Because attachments are sent as links, a large attachment doesn’t cause an email message to exceed these limits. Email size can also vary due to things beyond user control, such as character set and transfer encoding of the parts of the email.
• You can manually select up to 200 contacts or leads from a contact or lead list view.
• You can add up to 10 list views in the Recipients field.
• List emails count against an org’s mass email daily send limit, which is typically 5,000 email recipients per day.
• In Developer Edition orgs and trial orgs, you can send to no more than 10 external email recipients per day using mass email and list email. 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, you can send emails to a maximum of 50 recipient addresses per day.