Hi, I try to use thunderbird this year. Most of mail is good. I get more than 300 mail within half month. My client tell me that she has sent mail, but I can't get it..,, I check the inbox by sorting sender and date....that mail is not existed. Then I use find function (on inbox) and find the mail..... I click that mail and that is the mail sent by my client. I go back to inbox and check it...That is not existed.. I go to find result and move that mail to draft...then go to drat and then move to inbox again.... I can find it on inbox without find function... My client tell me that she has sent mail, then I use find function. If my client don't tell me, then I can not find her mail in inbox.... What is the problem??