automatically create category if it doesn't exist. new option to allow this feature?
Add setting for category detection. I.e. checkboxes for [], -- and : styles. Default to all on.
Add setting to not remove category text from subject/title
Comment not being created when subject contains category command []. I.e. listserv subject lines
date: tag is being detected in body when not wanted
Update tag_* and filter_* to handle HTML (per tag_Tags)
dynamically determine video size (height/width) - https://code.google.com/p/phpvideotoolkit/
gallery logic does not handle both images and non-images
plugin conflict - Image Rotation Fixer/Image Rotation Repair
send email notice when attachments are rejected.
review http://wp.smashingmagazine.com/2011/11/23/improve-wordpress-plugins-readme-txt/
use wordpress plugin template
  boilerplate http://wppb.io/
  starter-plugin https://github.com/mattyza/starter-plugin
  WordPress-Plugin-Template https://github.com/hlashbrooke/WordPress-Plugin-Template
configurable message for "post confirmation" - variable substitution
add hooks for post meta data change
  post type
  post format
  category
  date
  comment control
  excerpt
  tags
  author
add hook for email address extraction
  author found - allows plugins to change who the author is, filter need access to message to extract from body or headers
  to email - allows plugins to change category/tags based on the TO address (allows CC & BCC to be Postie mailbox)
add hooks for content changes
  attachment template
  subject/title
  post begin
  post end
  signature strip
hook for actions
  post failure
  post success
  media attachment
  non-permitted attachment types
  email rejected
  email connection failure
  start check
  end check
  mail read
  mail delete
  content part
collect and send last debug log and system info (see http://wordpress.org/plugins/send-system-info/)
Support EXIF orientation via PHP Exif Library https://github.com/lsolesen/pel

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Revised parsing logic

convert all logic to filters
before session filter
before mail filter
email/account filter
attachment filter
iterate through each html element (p, div, etc) and apply all filters and buffer output
after mail filter
after session filter

convert plain text to html using same logic as wp - i.e. all text is html
Original text is never modified
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AddOn Ideas
(done) Google Alerts - turn each alert into a post
HTML cleaning - use http://htmlpurifier.org/ to convert Word Html and other bad html into standard html

=========
Postie 2.0

http://www.yaconiello.com/blog/how-to-write-wordpress-plugin/

setting to turn off individual tags
process single email at a time and don't delete unless successful
plugin mechanism to add new tags (and define "built-in ones")
fix postie settings	http://alisothegeek.com/2011/01/wordpress-settings-api-tutorial-1/
Make sure all failures are sent to admin (option?) failed attachments, etc.
Option to send logs to support
Enhance #img# to specify the featured image
"yoast" style admin sidebar - see clicky by yoast
replace native imap MIME parser with flourish - http://flourishlib.com/docs/fMailbox
provide a location for custom icons. update docs about location.
handle condition where only one of text/plain & text/html is supplied, but Preferred Text Type is set to the opposite.
change all Postie command to use a more consistent and easy to parse syntax

  Use standard shortcode syntax? I.e. [postie date="Jan 1, 2014"]

  commands with multiple data
    #custom name="field name" data="field value"  custom#

  commands with single data
    #img the caption img#
    #tags one, two, three tags#
    #cat one, two, three cat#
    #date tomorrow date#
    #excerpt the excerpt excerpt#
    #post-type custom post type post-type#
    #post-format image post-format#
    #subject title subject#
    #delay 1 day delay#
    #content the post content# - replacement for :start/:end

  tag w/o data
    @more (new)
    @comments-open, @comments-closed, @comments-registeredonly
    @status-draft, @status-publish, @status-pending, @status-private

  alternate syntax
    {{@cmd data }}
    {{@status draft}}
    {{@category one, two, three}}
    {{@custom name="field name" data="field value" }}