Active Sync Vs Zimbra Connector

[lucas8720]

Good evening,
I have a problem with an Outlook 2016 installation in Active Sync and Zimbra Network Edition
Everything works correctly but the mail client does not indicate whether an email is responding or forwarded from another account ...
Practical example:
User A responds to an email with Outlook (active sync)
User B in Outlook does not see User A responded.

Phonebook and calendar synchronize correctly.

I was thinking of using Zimbra Connector, but the customer needs to have 3-4 different email addresses within the same Outlook profile and can handle them completely, respond and send mails to various accounts.

Do you have any suggestions?
Many thanks in advance