how to import cached mail adress from *.nk2 (outlook) to eM Client?
at the moment the only way to import autocomplete addresses from Outlook stored in .NK2 files is to use third party tools to convert those addresses to vCard (.vcf) and the import those vCards into some eM Client contact folder.
Autocomplete in eM Client searches contacts from all folders, therefore also the imported contacts will be suggested.
A .nk2->vCard conversion tool that I tested and that seemed to work is called debunk2 (http://code.google.com/p/debunk2/ , I suggest using the installer).
Let me know if this helps.