The maximum file size for emailed reports is 10 MB and any further emails will be disabled for 60 minutes if the email limited is exceeded. In addition, the email report will be disabled if any of the following is true:
- Attachment size > 10 MB
- Total number of emails sent in an hour per rule > 500
- Total data usage of emails per hour > 500 MB
Finally, please note that PDF email reports generally have a larger file size compared to Excel emailed reports.