Redmine

So you right click on an issue (or multiple issues) in the issue list, hover over assigned, and assign an issue to a user. Redmine generates an email (or multiple emails). Repeat to set the status to Assigned or Pending. Redmine generates another email (or several more emails).

You can avoid this by just going in and editing the issue(s), but it would be nice if you could shrink that down to one step. Given the configurability of issue statuses, I don't know if it would need to go as far as making that a configuration option on the Issue Statues or not, its pretty specific to those bulk updates, as you don't always want to change the status when assigning issues (particularly if there's a status already set). I've been chewing over how to mod/patch it for a while now and haven't come up with anything.