If you send me an email message, and I don't reply to it within two days, please, PLEASE ask me if I received it.
On November 11, I think, a friend wrote me an urgent email message asking me to call another friend who needed some help from me. It didn't arrive in my box until a week later, when it was far too late for me to help my friend. I know of three emails sent within the past couple of months which have never arrived.
If you would like my cell phone number, so you can reach me if I don't reply to an email, let me know here, and I'll send it to you.