Juantutri Aug 23 2022, 8:22am CST ~ 1 mo., 12 days ago.
I am not aware of any that specifically applies to emails, but there's the slang "dedma" which means something like "to choose not to respond to a stimulus" or "to pretend to be unaware of the stimulus".
It can be made into a verb. For example:
(OF) Dedmahin: dinedma, dinededma, dededmahin
Q: Sinagót ba ni Anna ang email mo? = Did Anna respond to your email? A: Hindi. Mukhang dinedma lang. = No. It seems that she just ignored it/pretends to have not received it.