This, in a nutshell, is the deal:
Please do not email me asking what’s up with your lost comment. I either deleted it because it was crummy, or it got stuck in moderation because it contains some banned phrase or other, and I will liberate it in a day or two, or it vanished into thin air due to some whim of the Internet. None of these scenarios requires your intervention with an email.
Therefore, if your question is “should I email you to ask what’s up with my lost comment?” the answer is “no.”
By which I mean, please do not email me asking what’s up with your lost comment, because I promise you, I don’t have the slightest idea.