It's collection of match objects. The Global = .T. setting is requred if all matches are desired. The rest of details about match object you can find using Intellisense.
BTW, in the code I'm using one of regular expressions from http://regexlib.com/.

CLEAR 

TEXT TO lcStr NOSHOW
Sales: sales@whatever.com
Info: info@whatever.com
Support: support@whatever.com
ENDTEXT


loMatches = ExtractAddresses(lcStr) 
? loMatches.Count
FOR EACH loMatch IN loMatches 
	? loMatch.Value
ENDFOR
RETURN

FUNCTION ExtractAddresses
LPARAMETERS tcText
LOCAL loRegExp, loEmAddrList
loRegExp = CreateObject("VBScript.RegExp")
loRegExp.IgnoreCase = .T.
loRegExp.Global = .T.
loRegExp.Pattern =  '(\w[-._\w]*\w@\w[-._\w]*\w\.\w{2,9})'
loEmAddrList = loRegExp.Execute(tcText)
RETURN loEmAddrList

>Just curiousity, what properties does loEmAddrList have?
>