Nick Hatch

I was having the same issue, but can't reproduce it if I use pymongo 2.9 . It looks like the `network_timeout` argument [was removed](https://api.mongodb.org/python/current/migrate-to-pymongo3.html#network-timeout-is-removed), and this has side effects for...

@seanmuth I think your `attachments` is mal-formed - looks like you're accidentally trying to send a message with seven attachments. You probably want to try something more like this: ```...