Hi there,
This looks very neat from the screenshots! I wanted to try this out so i tried this on 2.4 and installation didn't work out :
"Invalid table name {block_nice_mail_messages_recipients}: name is too long. Limit is 28 chars."

perhaps you can try shortening the frankenstyle component name or perhaps just shorten the table name.

also :
- please add a readme.txt
- the validation results under the settings block here mentions 'In your version.php you have specified $plugin->requires = 2012111000, which corresponds to Moodle 2.4 and will not install on Moodle 2.2 that you chose in the form' - this will with the table name length issue i mentioned above.

I'm unapproving this for now until theres a response here. This really just needs a table name clean up for it to install fine.
Please send this for re-approval when ready.

thanks for the recent version - this now installs without fatal errors

there are some things to note though before this is useful though:

1) This is breaking any course or page viewing => upon adding the block to a course, the course doesn't load due to incorrect table name. I suggest adding a code repository link here so that others can provide feedback and possibly even simple code fixes to your plugin

Debug info: Table 'p_master.mdl_block_nice_mail_messages_recipients' doesn't exist
SELECT
COUNT(r.id) AS messages
FROM
mdl_block_nice_mail_message m
INNER JOIN mdl_block_nice_mail_messages_recipients r ON (r.messageid = m.id)
INNER JOIN mdl_user u ON (u.id = m.fromuserid)
WHERE
r.intrash = 0
AND
r.touserid = '2'
AND
m.courseid = '2'
AND
r.readed = 0
[array (
)]
Error code: dmlreadexception
Stack trace:
line 426 of /lib/dml/moodle_database.php: dml_read_exception thrown
line 1023 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
line 1382 of /lib/dml/moodle_database.php: call to mysqli_native_moodle_database->get_records_sql()
line 325 of /blocks/nice_mail/lib.php: call to moodle_database->get_record_sql()
line 780 of /blocks/nice_mail/lib.php: call to block_nice_mail_count_inbox_messages()
line 91 of /blocks/nice_mail/block_nice_mail.php: call to block_nice_mail_gui_default_block_content()
line 284 of /blocks/moodleblock.class.php: call to block_nice_mail->get_content()
line 232 of /blocks/moodleblock.class.php: call to block_base->formatted_contents()
line 953 of /lib/blocklib.php: call to block_base->get_content_for_output()
line 1005 of /lib/blocklib.php: call to block_manager->create_block_contents()
line 353 of /lib/blocklib.php: call to block_manager->ensure_content_created()
line 6 of /theme/base/layout/general.php: call to block_manager->region_has_content()
line 804 of /lib/outputrenderers.php: call to include()
line 734 of /lib/outputrenderers.php: call to core_renderer->render_page_layout()
line 230 of /course/view.php: call to core_renderer->header()

2) The block nice_mail does not define the standard capability block/nice_mail:addinstance
line 598 of /blocks/moodleblock.class.php: call to debugging()
line 576 of /blocks/moodleblock.class.php: call to block_base->has_add_block_capability()
line 236 of /lib/blocklib.php: call to block_base->user_can_addto()
line 1834 of /lib/blocklib.php: call to block_manager->get_addable_blocks()
line 1007 of /lib/blocklib.php: call to block_add_block_ui()
line 353 of /lib/blocklib.php: call to block_manager->ensure_content_created()
line 6 of /theme/base/layout/general.php: call to block_manager->region_has_content()
line 804 of /lib/outputrenderers.php: call to include()
line 734 of /lib/outputrenderers.php: call to core_renderer->render_page_layout()
line 203 of /course/category.php: call to core_renderer->header()

3) ( ! ) Notice: Undefined variable: a in /Users/aparup/Sites/p/blocks/nice_mail/lang/en/block_nice_mail.php on line 57

----
in light of the fact that this is still not useable - i'll keep this held here (in unapproved) until either:
- the repository is added for easier collaboration
- or the block becomes useable.

thanks for your collaboration (from what i can see from logs )
- readme was added
- version updated to 20111206..

thanks for a quick new version!
Please remember to put up useful link (like your code repository for example )

Moodle version: 2.3.4
Browser: tested in I.E 10, Firefox and chrome
I have successively installed “Nice Email” plugin to Moodle 2.3.4; I added the block into two courses.
I can’t seem to be able to “Add recipients” when composing a message.
I logged in as a teacher and as a student with no luck; any recommendation?
Course has 8 participants in total, two of which are teachers.

No es posible agragar destinatarios...probado en la versión 2.4 y NO sirve