You can use spam filter to block emails by size.
1. Login to your DirectAdmin Account.
2. In the E-mail Manager section, click on the SPAM Filters icon or type SPAM Filters in the navigation filter box and the option will appear. Click on it.![](\"../../../img/da-spamfilters-icon.gif){kind=icon}
3. Under Block By from the drop-down menu, choose the Size option.
4. In Value, choose size in KB or MB and enter your value.![](\"../../../img/da-blockby-emailsize.gif)
5. Click the Block button.
If you have chosen size in MB and have entered the value 5, for example, all emails exceeding 5MB in size will be blocked.
