You can import data from your previous email client or specific files through the Import Wizard.
Select Menu > File > Import:
This product can import emails, contacts and calendar events from Microsoft Outlook, Microsoft Outlook Express, The Bat! as well as from external eml, ics, vcf and Windows Address Book files.
eM Client also detects from your device what programs were originally installed, so not all Import options might be available in your list.
Find out how to: