Hi, welcome and thank you for your question. My name is ***** ***** I am glad to assist you today.
I am very sorry about your issues. So I believe you are using Google App or Gmail for business, you are using your own domain name in the Gmail platform.
Did they tell you if they receive a Failure Delivery Notification (FDN) that made them to think that you did not receive their emails to you?Please let me know by replying to me here so that I can help you further.
You're welcome. Do you still want to continue with this question?
Ok, thank you for the confirmation. You can close this chat anytime. But if you need assistance with anything else later. just let me know. I will be happy to assist you.