Not receiving all emails

I have recently noticed I have not received emails from at least two senders in the past two months. One is from a person who sends a weekly email out to an email list I am a part of and the other is from a regular email user. I am receiving other emails but I’m unsure if there’s other ones I have missed. They aren’t showing on the app or the mobile site. I’ve checked all my settings to make sure no senders are blocked, checked my spam folder, and have tried re-adding my account. Anyone else having this issue or have other suggestions what to try??