Handling large email messages
If someone emails you a very large message, you probably don't want to download the entire thing automatically. It would be a bummer to download a 6MB email over a modem only to find out that it is a spam!
If you want Spamfire to skip large messages, check Skip messages larger than and then specify a size (in Kilobytes) in the text field.
If you then check Leave on server and fetch with my email program, Spamfire will leave the message on the server. You should be able to configure your email program to download only part of the message so you can check it to see if it is spam and then download or delete the remainder accordingly.
Or you can have Spamfire make a decision about whether to delete the message by checking Delete from server if headers look like spam. Spamfire will not download the body of large messages. It will download the headers and run them through the Spamfire filters. If the resulting Spam Score is high enough, Spamfire will delete the message from the server without downloading it.
Using this setting can cause unwanted data loss! Once Spamfire deletes the message, there is no way for you to recover the body of the message. (However Spamfire will store the headers of the message in the Spam List. This will at least enable you to reply to the email if necessary.)
To help avoid deleting desirable messages, Spamfire requires that the Spam Score be higher when deleting large messages than it normally would require. If your Spam Score Threshhold is set to 30, Spamfire will not delete a large, unread message unless its headers are at least 44. (The formula is (100 - threshhold) * .2 ).