Include explorer's search length in mail (similar to Artefact Search)

It would be helpful if the length of the search could be included in the subject of the mail after the explorer has completed the search, similar to how it appears for Artefact Searches. This would remind me which search I sent an explorer on since I almost never remember by the time the explorer has returned. Ideally this would be the case for both treasure and adventure searches.

Here's a screenshot of the Artefact Search, which clearly shows what search the explorer had been on.
Attachment 6756

And here's the screenshot of what it looks like for the rest of the searches.
Attachment 6757

If not in the subject, having it in the body of the message would be nice. Or maybe use the name of the explorer, so I could then rename them "Long Treasure Search" or something.

Side note: I realize that if an explorer has certain skills that are only applicable for a particular search, that I can deduce it that way, but some explorers don't have any skills yet, so it's hard to remember.

I name all my specialists... It would be nice if, especially Explorers had their name in the report. Then those who don't name will not be affected, but those who do, could track successes and the failures. :D