<s>
Although	O
many	O
more	O
standards	O
actually	O
apply	O
to	O
e-mail	O
,	O
virtually	O
all	O
mail	B-Protocol
servers	I-Protocol
and	O
e-mail	B-Protocol
clients	I-Protocol
support	O
at	O
least	O
the	O
following	O
basic	O
set	O
.	O
</s>
