Ideas

These are random ideas that may or may not make sense. Most of them were in one way or another inspired by conversations at FSCONS 2011/2012.

Power user features

Done?

• Fast for large amounts of e-mail
• Powerful searching
• Powerful filters
• GPG encryption: mail and/or local data
• Reply all, reply many, forwarding, bouncing

Ideas:

• Sticky search: checked messages stay in the list
• GPG indexing: automatic or manual
• Multiple personalities for composing: name/email/gpg/sig/template
• Personal mailing lists: if UI is public, allow direct unsubscribe
• Schedule messages for sending later
• Built-in web-bug support to know who has read what and when
• Revokable mail: send an URL, display message in browser.
• Multimedia composing
• Collaborative composing
• Google Translate integration
• Ability to drop messages from the search index? (Delete)
• Facebook/Gravatar integration for photos?
• Jabber transport to snag Facebook messages? Facebook app?
• Markdown!

Tahoe-LAFS integration

Once a significant amount of e-mail has been indexed, tagged and sorted, losing the index becomes a serious problem.

Backing up is the obvious solution (and not necessarily Mailpile's problem), but it would be interesting to explore the option of integrating with Tahoe-LAFS to provide "out of the box" secure distributed storage.

... but it would probably be too slow. An alternative, now that mailpile knows how to GPG encrypt/decrypt things, is to add unhosted support or webdav. That might get us Tahoe-LAFS for free anyway?

Remote sources and sync

Mailpile currently recognizes duplicate messages by Message-ID, and assumes that discovering a duplicate within the same mailbox means the message has been edited/moved.

It silently ignores duplicates found in other mailboxes, which is probably not great behavior, instead it should probably track all locations for a message (update: this has been fixed).

This in turn implies a backup/sync option: Mailpile could enforce a policy of all messages always existing in multiple mailboxes OR a simpler policy where one mailbox always mirrors the others.

This in turn leads to questions about versioning, which is a big topic...

Collaboration and access controls

If tags are given an "access control" characteristic, Mailpile's web interface could be useful for:

• Collaboration on mail
• Support / Forums
• Instant mailing list archives
• Blogging and comments

RSS integration

Reading mail and reading RSS are really similar. Indexing RSS feeds would be kinda awesome.

However - once we start indexing other peoples' content we quickly end up with an order of magnitude more data and the index-in-RAM strategy may become untenable. It's like busy mailing lists, only worse.

Searching other things

It's a search engine. It could search the web, but more realistically it might be useful as a super-bookmarking tool which indexes arbitrary pages on demand. We'd want a mirroring feature to go with this though.

We should be able to index the chat logs from e.g. Pidgin/Purple.

Fighting spam

Training a Bayes filter would ideally be done automatically:

• Replying to a message can be treated as a relatively strong indicator that a message is not spam - could lead to auto-whitelisting of the sender.

• Archiving a message or tagging is a weak indicator that a message is not spam.

• Flagging as spam trains the spam filter.

Do we want to implement the mailer fingerprinter?

PageKite allows us to use the web:

• Folks could submit e-mail using web forms instead of SMTP, where anti-comment-spam tech can be used to avoid spam.

• Borderline spam could potentially get auto-replies directing senders to an annoying "prove you are human" form.

Combining Mailpile and PageKite, means mail clients can start talking to each-other. Could this be useful for fighting spam?

• Marking mail AS SPAM or as NOT SPAM could be shared anonymously with peers, via. hashes.

• Reputation information could be shared as well. But with friends only, as it will inevitably leak who you are communicating with? The benefit is a potential friends-of-friends whitelist for preventing false-positives and allowing spam filters to be more aggressive.

Packaging

Take a look at sickbeard, sabnzbd, couchpotato for inspiration regarding packaging.