I am hoping someone can answer this question. I want to revert back to Tiger from Leopard, which I should be able to do using the 10.4.10 install disks that came with my iMac. But my biggest issue is getting my e-mail back into Mail 2. The approach I am considering is archiving the mailboxes from Mail 3 to mbox format on an external hard drive, and then importing those mbox archives into Mail 2 once I have reverted to Tiger. However, I have not been able to find any answer as to whether Mail 2 can read the mbox format created by Mail 3.