<s>
Apache	B-Language
James	I-Language
,	O
a.k.a.	O
</s>
<s>
Java	B-Language
Apache	O
Mail	O
Enterprise	O
Server	O
or	O
some	O
variation	O
thereof	O
,	O
is	O
an	O
open	B-Application
source	I-Application
SMTP	B-Protocol
and	O
POP3	B-Protocol
mail	B-Protocol
transfer	I-Protocol
agent	I-Protocol
and	O
NNTP	B-Protocol
news	B-Application
server	I-Application
written	O
entirely	O
in	O
Java	B-Language
.	O
</s>
<s>
IMAP	B-Protocol
support	O
has	O
been	O
added	O
as	O
of	O
preview	O
version	O
3.0-M2	O
,	O
which	O
now	O
requires	O
Java	B-Language
1.5	O
or	O
later	O
.	O
</s>
<s>
The	O
James	O
project	O
manages	O
the	O
Apache	O
Mailet	B-Language
API	B-Application
which	O
defines	O
"	O
matchers	O
"	O
and	O
"	O
mailets	B-Language
"	O
.	O
</s>
<s>
A	O
matcher	O
is	O
used	O
to	O
classify	O
messages	O
based	O
on	O
some	O
criteria	O
,	O
and	O
then	O
determines	O
whether	O
the	O
message	O
should	O
be	O
passed	O
to	O
an	O
appropriate	O
mailet	B-Language
for	O
processing	O
.	O
</s>
<s>
Mailets	B-Language
are	O
so-called	O
due	O
to	O
their	O
conceptual	O
similarity	O
to	O
a	O
servlet	B-Application
,	O
and	O
arose	O
because	O
Sun	O
Microsystems	O
declined	O
a	O
proposal	O
to	O
include	O
mail-handling	O
in	O
the	O
servlet	B-Application
implementation	O
.	O
</s>
<s>
James	O
ships	O
with	O
a	O
variety	O
of	O
pre-written	O
matchers	O
and	O
mailets	B-Language
to	O
serve	O
common	O
tasks	O
.	O
</s>
<s>
Many	O
sets	O
of	O
mailets	B-Language
and	O
matchers	O
can	O
be	O
combined	O
to	O
produce	O
sophisticated	O
and	O
complex	O
functional	O
behaviour	O
.	O
</s>
<s>
The	O
Apache	B-Language
James	I-Language
project	O
also	O
produces	O
pure	O
Java	B-Language
libraries	O
for	O
implementing	O
Sender	O
Policy	O
Framework	O
(	O
SPF	O
)	O
,	O
the	O
Sieve	O
mail	O
filtering	O
language	O
,	O
and	O
parsing	O
MIME	O
content	O
streams	O
,	O
independent	O
of	O
Sun	O
's	O
JavaMail	O
API	B-Application
.	O
</s>
<s>
James	O
was	O
originally	O
formed	O
under	O
the	O
Jakarta	B-Language
Project	I-Language
as	O
Jakarta-James	O
.	O
</s>
<s>
James	O
is	O
distributed	O
to	O
within	O
the	O
Phoenix	O
container	O
,	O
which	O
implements	O
the	O
Apache	B-Language
Avalon	I-Language
application	B-Application
framework	I-Application
.	O
</s>
<s>
Recent	O
developments	O
include	O
a	O
version	O
which	O
runs	O
in	O
the	B-Application
Spring	I-Application
Framework	I-Application
application	B-Application
framework	I-Application
.	O
</s>
