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Apr 09

E-mail stats

Been playing around with Xobni, an indexing and analytics plug-in for Outlook. Once it’s created an index, It’s pretty snappy with searches, much more than Outlook’s own search function (I never understood why Outlook’s search was so poor). What’s more interesting is the analytics which produces all sorts of stats, such as who sends emails to you the most, the average time people take to reply to your emails, and the times of day you receive the most email. Here are some graphs generated from the last 11 months of my inbox history (June 08 to April 09).

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Distribution of email received by hour of day: Clearly, people like emailing before and after lunch

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Distribution of email sent by hour of day: I do a lot of emailing between midnight-1am, as well as a bunch in the morning after I’ve woken up (10am-noon). Clear dips in emailing during lunch (noon-2pm) and dinner (7-9pm)

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Email volumes over the last 11 months: I came to Stanford in August last year and the email traffic jumped.

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Uniques: This graph surprised me – this shows the number of unique people mail was sent/received to/from throughout the course of each month. The received graph is somewhat inflated by email received from mailing lists and other non-human email addresses.

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Average time for me to respond to emails: No surprises here – I took longer to respond to emails during the Christmas holiday.

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