How to ask guests that want to give $ to e-transfer

We don’t expect gifts. We have been living together for awhile so we don’t need much. We just want to celebrate.


But I don’t know how to politely request, that if anyone does want to give us a cash gift, that they give it as an e-transfer.
I’ve had friends with message cards go missing, visa gift cards with fraudulent pins. Lost cheques! I don’t want to worry about gift safety at our venue.
So how do you politely say, please send us money or gifts to our home and not bring them with you to our wedding? And not have it sound like we are asking for gifts