Sandy changes the subject of an email so that it breaks a Gmail conversation - can I customize mail subject template?

As you probably know Gmail groups emails into conversations based on subject.

An email I get, is often a To-Do item. I want my inbox clean and postpone the action to a later date/time by forwarding it to Sandy and saying: "remind me in" the email body. (so that I can archive the conversation and concentrate on the stuff that is in my inbox and needs immediate action)

However, in the reminder Sandy adds "[reminder]" to the subject line and adds the reminder time. This breaks the conversation. Can I switch off this added information so that the email shows up in my inbox again _together with_ the rest of the conversation that has the information I need for the action?
 
sad I’m frustrated
Inappropriate?
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