<s>
Eudora	B-Protocol
OSE	I-Protocol
(	O
Open	O
Source	O
Edition	O
)	O
,	O
formerly	O
codenamed	O
Penelope	B-Protocol
,	O
is	O
an	O
extension	B-Operating_System
for	O
the	O
Mozilla	B-Application
Thunderbird	I-Application
email	B-Protocol
client	I-Protocol
software	O
implementing	O
some	O
features	O
of	O
Eudora	B-Operating_System
.	O
</s>
<s>
On	O
October	O
11	O
,	O
2006	O
,	O
QUALCOMM	O
Incorporated	O
and	O
the	O
Mozilla	O
Foundation	O
announced	O
future	O
versions	O
of	O
Eudora	B-Operating_System
would	O
be	O
based	O
on	O
the	O
Mozilla	B-Application
Thunderbird	I-Application
platform	O
and	O
be	O
open-source	B-Application
.	O
</s>
<s>
The	O
codename	O
for	O
this	O
project	O
is	O
"	O
Penelope	B-Protocol
,	O
"	O
with	O
that	O
name	O
being	O
used	O
for	O
the	O
extension	B-Operating_System
provided	O
for	O
Thunderbird	B-Application
,	O
and	O
the	O
Eudora	B-Operating_System
name	O
kept	O
for	O
all-in-one	O
releases	O
packaged	O
and	O
released	O
by	O
the	O
Eudora	B-Operating_System
development	O
team	O
.	O
</s>
<s>
Development	O
began	O
with	O
the	O
first	O
patch	O
being	O
submitted	O
to	O
Bugzilla	B-Application
on	O
November	O
22	O
,	O
2006	O
.	O
</s>
<s>
Further	O
development	O
of	O
Penelope	B-Protocol
and	O
Eudora	B-Operating_System
continued	O
,	O
with	O
the	O
first	O
beta	O
version	O
of	O
Eudora	B-Operating_System
8.0	O
released	O
on	O
August	O
31	O
,	O
2007	O
;	O
the	O
most	O
current	O
releases	O
,	O
Eudora	B-Operating_System
8.0b9	O
and	O
Penelope	B-Protocol
1.0b1	O
,	O
were	O
released	O
on	O
March	O
4	O
,	O
2010	O
.	O
</s>
<s>
On	O
July	O
2	O
,	O
2010	O
,	O
the	O
name	O
was	O
changed	O
to	O
Eudora	B-Protocol
OSE	I-Protocol
(	O
Open	O
Source	O
Edition	O
)	O
and	O
the	O
version	O
number	O
was	O
reset	O
to	O
1.0	O
when	O
it	O
was	O
released	O
.	O
</s>
<s>
Beta	O
versions	O
of	O
Eudora	B-Protocol
OSE	I-Protocol
were	O
originally	O
named	O
just	O
Eudora	B-Operating_System
with	O
a	O
version	O
number	O
of	O
8.0	O
.	O
</s>
<s>
This	O
caused	O
some	O
confusion	O
in	O
that	O
some	O
users	O
expected	O
the	O
new	O
version	O
to	O
be	O
a	O
regular	O
update	O
to	O
Classic	O
Eudora	B-Operating_System
.	O
</s>
<s>
Since	O
Eudora	B-Protocol
OSE	I-Protocol
uses	O
an	O
entirely	O
different	O
code	O
base	O
from	O
Classic	O
Eudora	B-Operating_System
,	O
in	O
an	O
effort	O
to	O
reduce	O
the	O
confusion	O
the	O
application	O
was	O
renamed	O
to	O
Eudora	B-Protocol
OSE	I-Protocol
(	O
Open	O
Source	O
Edition	O
)	O
.	O
</s>
<s>
The	O
version	O
number	O
was	O
also	O
reset	O
to	O
1.0	O
,	O
which	O
has	O
the	O
added	O
benefit	O
that	O
it	O
is	O
synchronized	O
with	O
the	O
Penelope	B-Protocol
version	O
number	O
.	O
</s>
<s>
Eudora	B-Protocol
OSE	I-Protocol
does	O
not	O
retain	O
the	O
original	O
mbox	O
data	O
structure	O
,	O
which	O
stores	O
all	O
attachments	O
as	O
individual	O
files	O
together	O
in	O
one	O
folder	O
.	O
</s>
<s>
No	O
software	O
is	O
currently	O
developed/supported	O
that	O
can	O
access	O
old	O
Eudora	B-Operating_System
mail	O
archives	O
directly	O
,	O
without	O
import/conversion	O
.	O
</s>
<s>
Many	O
Eudora	B-Operating_System
users	O
disliked	O
the	O
direction	O
Penelope	B-Protocol
took	O
.	O
</s>
<s>
Similarly	O
,	O
reception	O
to	O
Eudora	B-Protocol
OSE	I-Protocol
continued	O
to	O
be	O
lukewarm	O
months	O
after	O
the	O
release	O
.	O
</s>
<s>
The	O
intended	O
updates	O
,	O
to	O
be	O
released	O
in	O
parallel	O
with	O
new	O
Thunderbird	B-Application
releases	O
,	O
have	O
not	O
materialized	O
and	O
continue	O
to	O
lead	O
to	O
frustration	O
and	O
disappointment	O
in	O
the	O
Eudora	B-Operating_System
community	O
.	O
</s>
<s>
On	O
June	O
28	O
,	O
2013	O
,	O
the	O
Mozilla	O
website	O
indicated	O
that	O
Eudora	B-Protocol
OSE	I-Protocol
is	O
based	O
on	O
an	O
out-of-date	O
version	O
of	O
Thunderbird	B-Application
and	O
that	O
,	O
to	O
Mozilla	O
's	O
knowledge	O
,	O
Qualcomm	O
has	O
no	O
plans	O
to	O
update	O
or	O
support	O
it	O
.	O
</s>
<s>
Mozilla	O
recommends	O
current	O
users	O
consider	O
switching	O
to	O
Thunderbird	B-Application
.	O
</s>
<s>
Based	O
on	O
Mozilla	B-Application
Thunderbird	I-Application
2.0.0.6	O
release	O
code	O
December	O
11	O
,	O
2007	O
8.0.0b2	O
0.1a22	O
Based	O
on	O
Mozilla	B-Application
Thunderbird	I-Application
3.0	O
pre-release	O
code	O
February	O
22	O
,	O
2008	O
8.0.0b3	O
0.1a22	O
First	O
version	O
available	O
for	O
Linux	B-Application
November	O
3	O
,	O
2008	O
8.0.0b4	O
0.5a1	O
January	O
16	O
,	O
2009	O
8.0.0b5	O
0.5a2	O
April	O
8	O
,	O
2009	O
8.0b6	O
0.5a3	O
September	O
4	O
,	O
2009	O
8.0b7	O
0.5a4	O
January	O
5	O
,	O
2010	O
8.0b8	O
0.5a5	O
March	O
4	O
,	O
2010	O
8.0b9	O
1.0b1	O
Last	O
expected	O
beta	O
before	O
release	O
of	O
Eudora	B-Operating_System
8.0	O
July	O
2	O
,	O
2010	O
1.0rc1	O
1.0rc1	O
July	O
23	O
,	O
2010	O
1.0rc2	O
1.0rc2	O
September	O
13	O
,	O
2010	O
OSE	O
1.0	O
Eudora	B-Protocol
OSE	I-Protocol
1.0	O
released	O
to	O
the	O
public	O
.	O
</s>
