Uncaught Exception parsing email with no Date field

[rdarden]

Node-RED version: v0.10.10
Node.js version: v0.10.36

I have in my inbox for some reason an otherwise valid email with no "date" field in the header. This causes problems such as this when I have a flow that is reading the most recent email from the account in question ("email in"):

19 Jun 13:02:42 - [red] Uncaught Exception:
19 Jun 13:02:42 - TypeError: Cannot read property '0' of undefined
at Readable. (/usr/local/lib/node_modules/node-red/node_modules/node-red-node-email/61-email.js:207:65)
at Readable.emit (events.js:92:17)
at _stream_readable.js:944:16

at process._tickCallback (node.js:442:13)

207 is the "date" line from:

                                    if (info.which !== 'TEXT') {
                                        var head = Imap.parseHeader(buffer);
                                        pay.from = head.from[0];
                                        pay.topic = head.subject[0];
                                        pay.date = head.date[0];
                                        pay.header = head;