I've been looking over some of the email subscription options which could be added to the main site.
These should be quite easy to implement:
1. Email alerts (with the excerpt) of new posts, possibly with custom options (like from a particular category).
2. Email alerts of comment activity in a particular post.
Most of this functionality can of course be had with the numerous feeds, but I appreciate perhaps not everyone likes or uses them.
I'm just wondering if there is much call for these?
If there is, I will need to check them out with respect to mail volume, as with 10+ posts daily and 10,000 feed subscribers (I don't know many it is, but we get 15,000+ visits a day with no referrer, which is mostly either bookmarks or feeds), an unrealistic worst case could see 100,000 mails being sent out daily, so I can't guarantee it will be feasible.
I'm at a loss as to how most people track the comments - I use the full comments feed (although with a thousand a day this is becoming unmanageable), but there are also the post feeds and the simple business of refreshing the page later on. Any feedback here would be interesting.

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