This article provides information on restricting Kayako Classic from accepting emails or tickets based on attachment size.
Kayako Classic lets you restrict the size of each email coming into the helpdesk. Any incoming email that exceeds this size limit will not be fetched from your email server. These limits include the email's content and attachments.
You can find this setting from Admin CP > Settings > Email Parser > Email Size Limit.
For OnDemand customers, the max for this setting is 1024 KB since your helpdesk is hosted on shared servers.
For Download customers, the default is 2048 KB, and the only max is that it cannot exceed the
php_memory_limit value set in your
php.ini file. That being said, we do not recommend setting a high limit here. The larger the attachments you receive, the higher the risk that your helpdesk's performance will suffer.
For more information about email size limits, please visit the Email Attachment Size Limits in Kayako Classic article.
Additionally, you may also set up a rule that notifies the sender that their email is too large and cannot be processed by the helpdesk.