[CentOS] OT: Evolution folder location

I have used Eudora since v 1.35 (circa '93). For quite some time, I have enjoyed keeping each of my mail accounts' folders in totally separate directory trees. In Eudora you do this by specifying the data locatoin as part of the startup: '<program location>/eudora.exe <data location>'

So I am quite spoiled. But there is no Eudora support in Linux/CentOS.

So where are Evolution folders kept?

And Can I do something to have each account in a separate directory structure.

Oh, some more about Eudora, since perhaps v4:

If you run multiple personalities in a copy of Eudora, all that mail is in a single directory structure, though you CAN have filters to drop mail into different folders. To have multple directory structures, you run multiple copies of Eudora.