ZFS supports both compression and de-duplication on send streams, the behavior on the receiving side depends on the configuration of the pool+dataset where the

ZFS supports both compression and de-duplication on send streams, the behavior on the receiving side depends on the configuration of the pool+dataset where the data is being received. There used to be some differences in features/behavior depending on the ZFS version in use (Solaris vs FreeBSD vs ZFSoL/OpenZFS) but I believe as of 2018 all ZFS implementations have these features for send streams