I'm not sure what escrow means in this context. But if the server has the keys, I would say no, it's not e2e. This aligns with the definition on Wikipedia too

I'm not sure what escrow means in this context. But if the server has the keys, I would say no, it's not e2e. This aligns with the definition on Wikipedia too > it prevents potential eavesdroppers – including telecom providers, Internet providers, and even the provider of the communication service – from being able to access the cryptographic keys needed to decrypt the conversation.