//Contact A Start Date
Iif(Month(@mailDate) in(01,02,03), ToDate(ToString(Month(SubMonths(@mailDate,3))) + '/01' + '/' + ToString(Year(SubYears(@mailDate,1)))),ToDate(ToString(Month(SubMonths(@mailDate,3))) + '/01' + '/' + ToString(Year(GetDate()))))
//Contact B Start Date
Iif(Month(@mailDate) in(01,02,03,04,05,06), ToDate(ToString(Month(SubMonths(@mailDate,6))) + '/01' + '/' + ToString(Year(SubYears(@mailDate,1)))),ToDate(ToString(Month(SubMonths(@mailDate,6))) + '/01' + '/' + ToString(Year(@mailDate))))
//Contact C Start Date
Iif(Month(@mailDate) in(01,02,03,04,05,06,07,08,09), ToDate(ToString(Month(SubMonths(@mailDate,9))) + '/01' + '/' + ToString(Year(SubYears(@mailDate,1)))),ToDate(ToString(Month(SubMonths(@mailDate,9))) + '/01' + '/' + ToString(Year(@mailDate))))