limitations of sending mass emails in salesforce

Hi,

List Email Limitations

The following limitations apply to list emails.

• List emails can contain up to 32,000 characters.
• You can manually select up to 200 contacts or leads from a contact or lead list view.
• You can send up to the daily list email limit by entering the list view name in the Recipients field. Or, click Send List Email from a Contact list view, Lead list view, or Campaign record without selecting any individual records.
• List emails count against an org’s daily list email send limit, which is typically 5,000 emails per day. This limit doesn't include individual emails you send.

Hope this helps.