31 ms·Why are there annual bumps in the graph?by orangea 12y agoWhy are there annual bumps in the graph?jffry 12y agoThey seem to be in July/August - perhaps it's summer holiday season, and people don't open their email as much?nextweek2 12y agoSchools and Universities would be prime candidates for that and I bet the user base has a large proportion of those users.