i want to mail merge from excel

but the addresses sit in colum A
each address is listed in its entirity add1, add2, city, county, postcode
all separated by commas
so
first contact sits in A1
second in A2
etc.

Can I mail merge from this or do i need to move the address into col's
B,C,D,E etc ?
then mail merge ?

thanks

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Vass