Email question

On the 14 march I sent a email from my computer. On the same day I have discovered on my android pad I had one incoming on the same day .
Searching on spam -deleted and all files lists etc nothing shows up on my computer regarding this incomming email. I had 2 other incomming emails on that day as well but not this one

Could it be at all possible by me sending an email or somehow block the incomming one at the same time? yet the android pad received it? all dates before and afterward are on either the spam-deleted or all other lists, on the computer

Now it has disappeared completely glad I printed out a hard copy