There are multiple discussion on this community on IPv6 adjacent issues though the most pressing issue for IPv6 support is not solved yet the support team seems to not understand what is the issue and is steering the conversation to the wrong and misleading direction.
The top priority IPv6 support for Zoho is to support IPv6 on the 3 mail exchange (MX) servers mx{-,2,3}.zoho.com. Currently those three domains does not resolve any AAAA records, announcing no IPv6 support.
I am expecting IPv6 support as a basic thing in 2025. Does Zoho have any timeline for the IPv6 MX Support?