This is the 13791st most frequent German word.
erhaltene
"Erhaltene" means "received" or "preserved," depending on context.
The word 'erhaltene' here is used as an attributive adjective describing 'Post', meaning 'received mail'.
Die erhaltene Post wurde sortiert.
The received mail was sorted.
The word 'erhaltene' modifies 'Unterstützung', referring to the support that was received.
Sie schätzte die erhaltene Unterstützung von ihren Freunden.
She appreciated the received support from her friends.
'Erhaltene' serves as an adjective here, describing the document as one that had been received.