Overall, I do agree that email inboxes do contain a lot of interesting data about people and how frequently they communicate over email and potentially IM if a vendor offers both products in an integrated fashion. That being said, I don’t see how any of the top web email providers (Microsoft, Yahoo, and Google) can use this email information to build new social networking products. There is, however, an opportunity to use that data to power other people’s applications.

What additional value would I get in using one of these systems over Facebook, MySpace, or my current social network of choice? Details on these products are sketchy at best. However, almost any social networking product worth its salt has a contact importer. Once a user imports his/her contacts, he or she can then determine who from that subset of people he/she would like to invite. Is having a machine prompt to do this for personal social networking of great value? I can see the utility of this auto-population or auto-discovery in a work context (Xobni does do a good job of showing me my own correspondence patterns and I can imagine many things you could build on top of that data – the work use case is different as I think work communication patterns tend to be more dynamic than personal ones). Nothing I’ve heard in the limited details that have come out gives me reason to think that they’re on to something bigger.

I’d also say that if “powering up” this network requires me to create a new profile page, it’s a non-started. I’m out of that business for now unless or until I see a really great application that’s worth the time.

Webmail inboxes are a mess – I have yet to use an email product that has an even decent address book. All of the email address book offerings from the Big 3 email providers feel really dated. For example, the Gmail address book does not do a very good job of de-duplicating contacts. I have folks in my address book who have multiple entries and I’m not interested in going through to manually de-duplicate them; I’m counting on a machine to do that for me.

The larger point here is that I don’t know how you can build a really good, effective social networking product on top of email if you don’t do something to put some good, quality structure around the data. Social networking services who are sucking up email addresses to match a user’s inbox with their database of contacts don’t have the same problem – you just throw away the ones that don’t match (or allow a user to invite them). It’s a very different situation if you want to build a whole new social network product with email as the foundation.

Cross-functional collaboration is not easy inside of large companies – This is a fairly obvious point, but big companies are notorious for having internal challenges when it comes to cross-product collaboration. When one of the products in question is email, I don’t imagine that will be an easy conversation – nobody wants to play around with an interface that touches tens or hundreds of millions worldwide.

Think about the refresh cycles for webmail systems. How often do Gmail, Yahoo Mail, or Hotmal get updated? Not that often, and I have to think that touching those interfaces requires a lot of signoff and a strong conviction that the proposed changes will positively impact a wide number of people. Otherwise, you might end up with angry users. I have a hard time seeing any of these companies acting aggressively with one of their web crown jewels.

The end game ought to be to make this information available to other services and make mail the data platform, not build new applications. Sadly, I don’t think that’s a very interesting business to be in – I don’t know how you re-establish yourself as a major player in social networking by simply providing the data layer that powers other applications.

• The interface is quick – The Gmail interface is really snappy. It loads quickly and refreshes automatically. As is the case with most Google products, speed is clearly a high priority and it works really well.
• I can process/triage messages very quickly – Once you master the key keyboard shortcuts (j,k,x,n, and p are the crucial keyboard shortcuts to master in my opinion), it’s really easy to blast through a bunch of messages in your inbox and quickly triage them or otherwise mark them for future reading/evaluation.
• Search trumps foldering once you make the big leap – I am an active labeler in Gmail, but I’ve gotten lazy/sloppy with some of my labels over timer. The key “ah ha” moment in most Gmail user’s evolution is the moment in which the light bulb goes off and you realize that search is a more powerful navigation paradigm for email than foldering. It’s a leap of faith until you make the change.

One thing worth noting about the three things that I like most about Gmail – they only really matter if you are in a position where you need to manage (read, write, retrieve, and share) large amounts of email. If you don’t get a lot of email, most of these features and benefits don’t buy you much. In fact, you probably would not even bother mastering these things if you are not a power emailer.

The subject of to whom Gmail-like interfaces appeal is a subject for its own post. For the purposes of this post, we’ll just say that things like Gmail are designed for expert power users and have a high bar to adoption. However, once you adopt, it’s hard to switch.
After trying to go back to Outlook as my every day mail client, I’m finding it to be a very difficult adjustment. There are 3 things that stand out after a few days of non-Gmail email existence:

1. I miss keyboard shortcuts – a lot. After being out of the Outlook experience for over two years, I find the keyboard shortcuts to be a bit slow. Also, with the myriad number of formatting and presentation options that Outlook offers, it’s hard for me to actually remember all of the keyboard shortcuts at my disposal. The relatively short list of Gmail shortcuts that I can use really do the trick and allow me to get my work done quickly.

2. The Outlook client feels really slow. The time spent selecting messages, opening them, waiting for them to open, and then closing them and moving on to the next message just feels a lot slower in Outlook. I don’t know whether it’s because I’m less familiar with the interface or if there is something else at work. It just feels like it requires more keystrokes and work to get through my email using Outlook.

3. Working offline is not as big of a bang as I had thought originally. Now that I have a broadband access card for my laptop, there is relatively little time when I cannot be online if need be. Suddenly the ability to use my mail client offline is of less value as I find myself offline with declining frequency.

At the end of the day, I think that has big implications for folks who are building apps that plug into Outlook. Sure, not everyone in the world who uses email will switch from Outlook to Gmail. However, I know a lot of power email users who are moving away from Outlook and adopting Gmail. Given that so many of these interesting email products target power users, I am curious to hear how they will deliver their solutions to the (relatively) closed environments that we find in webmail. Greasemonkey scripts? Biz dev deals to get access to the platform? Lobbying hard for more opennes and APIs? I’m sure they’re all thinking about this stuff and what it means for their businesses.

As always, comments are welcome.

1. Most application development is so focused on the web that desktop clients are becoming orphans. What is the last desktop application you downloaded and said “wow” in terms of its impact? In particular, the email client space has been ceded to Microsoft in much the same way the browser market was ceded to them back in the day. I think the barrier for making a great desktop messaging application is quite high because a lot of Outlook users live by it in the enterprise and would have a hard time switching to a new mail client unless it supported all of the basics (group calendaring, email, tasks, etc) and offered some real benefits. The email client space is ripe for innovation, even if the value of winning in this market is no longer as clear as it once was. Despite the trend to move more and more email into the cloud, there are a meaningful number of people who still enjoy a rich client experience.

2. While the volume of useful email I receive is more or less constant, the number of total communications streams I’d like to monitor increases every day. I now subscribe to about 200 feeds, have a few hundred friends on Facebook, have a few friends who Twitter, and have lots of other information sources I’d like to track. A centralized messaging client (which did something nifty with email, RSS, instant messaging, and social network updates) would be a nice application to have.

So, I think the Thunderbird team has its work cut out for it but there is certainly an opportunity to do more with email clients.