This week's giveaway is in the Cloud/Virtualization forum. We're giving away four copies of Production-Ready Serverless (Operational Best Practices) and have Yan Cui on-line! See this thread for details.
I've run your code and I got this :
mes1: Sender: email@example.com subject: hello content: How are you today? date: 1/1/2019
mes2: Sender: google100gmail.com subject: Subject content: how's going? date: 2/1/1998