Describe the solution you'd like
In a table visualisation of communications, show the communication content in a popup/tooltip when hovering on the subject. All these data are available in the question.

In other words, on a table visualisation, be able to set an available "stringable" field as a tooltip to show when hovering the data. Could be set in the same place than column title and view as Text/Link, with a "related" field selector which, when set, would tell to show the content of this related field as a tooltip for this data.

Describe alternatives you've considered
Add this feature from navigator content script plugin.

How important is this feature to you?
Great to have !