<s>
Postini	B-Application
was	O
an	O
e-mail	O
,	O
Web	O
security	O
,	O
and	O
archiving	O
service	O
owned	O
by	O
Google	B-Application
since	O
2007	O
.	O
</s>
<s>
It	O
provided	O
cloud	B-Architecture
computing	I-Architecture
services	O
for	O
filtering	O
e-mail	O
spam	O
and	O
malware	O
(	O
before	O
it	O
was	O
delivered	O
to	O
a	O
client	O
's	O
mail	B-Protocol
server	I-Protocol
)	O
,	O
offered	O
optional	O
e-mail	O
archiving	O
,	O
and	O
protected	O
client	O
networks	O
from	O
web-borne	O
malware	O
.	O
</s>
<s>
Postini	B-Application
was	O
a	O
startup	O
company	O
founded	O
in	O
1999	O
by	O
Shinya	O
Akamine	O
,	O
Gordon	O
Irlam	O
,	O
Brian	O
Maggi	O
,	O
and	O
Scott	O
Petry	O
in	O
Redwood	O
City	O
,	O
California	O
,	O
United	O
States	O
.	O
</s>
<s>
By	O
February	O
2005	O
,	O
it	O
was	O
operating	O
ten	O
U.S.	O
data	B-Operating_System
centers	I-Operating_System
,	O
processing	O
2.5	O
billion	O
e-mail	O
messages	O
weekly	O
,	O
and	O
providing	O
anti-spam	O
services	O
for	O
more	O
than	O
4,200	O
companies	O
and	O
"	O
6	O
million	O
end	O
users	O
,	O
including	O
workers	O
at	O
Merrill	O
Lynch	O
,	O
Circuit	O
City	O
,	O
Rayovac	O
,	O
and	O
Hormel	O
Foods	O
,	O
the	O
company	O
that	O
makes	O
Spam	O
,	O
the	O
canned	O
meat	O
product	O
"	O
.	O
</s>
<s>
As	O
of	O
2012	O
,	O
the	O
number	O
of	O
processed	O
emails	O
is	O
estimated	O
to	O
have	O
been	O
doubled	O
around	O
two	O
times	O
,	O
and	O
Google	B-Application
has	O
added	O
data	B-Operating_System
centers	I-Operating_System
in	O
the	O
EU	O
to	O
better	O
serve	O
its	O
European	O
customers	O
.	O
</s>
<s>
On	O
July	O
9	O
,	O
2007	O
,	O
Google	B-Application
announced	O
that	O
it	O
had	O
signed	O
a	O
definitive	O
agreement	O
to	O
acquire	O
Postini	B-Application
.	O
</s>
<s>
Google	B-Application
paid	O
$625	O
million	O
in	O
cash	O
for	O
the	O
acquisition	O
.	O
</s>
<s>
The	O
former	O
company	O
's	O
services	O
were	O
then	O
marketed	O
as	O
"	O
Google	B-Application
Postini	I-Application
Services	I-Application
"	O
.	O
</s>
<s>
In	O
September	O
2011	O
,	O
Google	B-Application
announced	O
it	O
would	O
discontinue	O
a	O
number	O
of	O
its	O
products	O
,	O
including	O
Google	B-Application
Web	O
Security	O
,	O
which	O
was	O
acquired	O
by	O
Google	B-Application
as	O
part	O
of	O
Postini	B-Application
.	O
</s>
<s>
On	O
August	O
21	O
,	O
2012	O
,	O
Google	B-Application
announced	O
it	O
would	O
be	O
shutting	O
down	O
all	O
of	O
Postini	B-Application
's	O
web	O
services	O
and	O
folding	O
the	O
service	O
's	O
users	O
into	O
Google	B-Application
Apps	I-Application
.	O
</s>
<s>
After	O
a	O
multi-year	O
migration	O
effort	O
,	O
the	O
last	O
customers	O
were	O
migrated	O
to	O
Google	B-Application
Apps	I-Application
in	O
the	O
second	O
half	O
of	O
2015	O
.	O
</s>
