We are working on Email Services to create and update case records with emails.
when User sent an email, our email service class will create a new Case and populate few fields(description = emailbody).

When user reply with an additional comment , we need to fetch only the additional comment from email body.

But right now in the Replied email body also in apex class it is retrieving the older conversation as well along with latest one.

How to fetch only the latest email body to utilize for case Update.

Please help us out as this is a critical issue which needs to be resolved

Thanks in Advance

Is there anyway to find out if a custom field is updated by a regular user or by a process like flow? I have two custom fields "Order Date" and "Activation Date" on a custom object. The requirement is to auto populate the "Order Date" whenever the "Activation Date" is changed. However, if the "Order Date" field is manually updated by a regular user, the flow should not override it.

Is there anyway to find out if the "Order Date" field is updated by a regular user or by the flow without having another helper field?