If you are dealing with the estate, then banks, building societies, Local Government will ask you for sight of death certificate. Only then should it be sent - AND IT SHOULD BE A PHOTOCOPY which you send.
Love and Death on Long Island - 1997 is rated/received certificates of: Argentina:13 Australia:M France:U Germany:12 Netherlands:AL UK:15 USA:PG-13
Send in the Dogs - 2008 is rated/received certificates of: Australia:PG
God Send Me a Man - 2009 is rated/received certificates of: USA:PG-13
Send Me No Flowers - 1964 is rated/received certificates of: Australia:G Finland:S Sweden:Btl UK:U
Send in the Clowns I Colombaioni - 1976 TV is rated/received certificates of: Belgium:KT
Well, if you mean how long after a death you should send there card...then I would say no longer than one week. If it is a month or two before you send it, the receiver might think you forgot:/
Let's Get Skase - 2001 is rated/received certificates of: Australia:M
Utopia of Death - 1940 is rated/received certificates of: USA:Approved
Road of Death - 1973 is rated/received certificates of: USA:R
Life After Death - 1996 is rated/received certificates of: USA:G
A Death in the Family - 1987 is rated/received certificates of: Australia:M