jmeter mail sampler Q&A

[Mr. B Obst]

I am a new user, looking for more details on mail sampler. I have spent
considerable time playing, surfing, at this point I am asking for links,
blogs, user-lists, forums, or a direct answer to;

How to I check and erase IMAP emails?

I have thoroughly reviewed
http://jakarta.apache.org/jmeter/usermanual/get-started.html

I have added the two (2) jar files to /lib/ext
{
mail.jar,activation.jar
}

I have this error:
1170461276196,47,Mail Reader Sampler,500,java.io.IOException: Unknown
encoding: ,Thread Group 1-1,,false,null

Thats when I try to retrieve >0 messages.

Thanks in advance,

./b