As suggested, I've transferred the following post from the Chat board:
'Anyone know if it's possible to schedule emails in advance, please? Only, this morning I received a 'Happy New Year' email from someone who passed away in January last year. I know all this sounds very Fortean, but the truth is that I'm puzzled & just angry - rather than intrigued - that emotions have been stirred up again; I've been trying to get over their passing. So I'm really hoping that this is just proof of my lack of knowledge about emailing. I'm really hoping that this isn't a mystery at all. I can't express how pointlessly teed-off I am about this, which is futile - and that futility stems from the longstanding, horrible frustration that I could do nothing to stop them dying.'