query list into a string

I have a query that brings back a list of email address based on some factor I need to creat a list
from a result set
with out haveing to do a cursor
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do something like this:

declare @list varchar(1000)

select @list = @list + emailaddress + ';' from table1

set @list = substring(@list,1, (len(@list) - 1))
LeeHopkinsAuthor Commented:
no go

declare @list varchar(1000)

select @list = @list + p_emailaddress + ';' from Purge_Email

set @list = substring(@list,1, (len(@list) - 1))

it should have returned 4 records
LeeHopkinsAuthor Commented:
declare @list varchar(1000)
select @list = Coalesce(@list + ', ', '') + p_emailaddress
from purge_email where charindex('input_output',P_customer)> 0
select @list

Almost works but not giving distinct
declare @list varchar(1000)
select @list = Coalesce(@list + ', ', '') + distinctaddr.p_emailaddress
from (select distinct p_emailaddress from purge_email where charindex('input_output',P_customer)> 0) as distinctaddr
select @list

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