Subject: Re: Agents' emails on Mar-a-Lago raid...
...say they didn't think they had probable cause:

Why is that relevant?

They got the search warrant. Which means that even if that individual person (or several persons) weren't sure they had probable cause, when they went to the judge to get the warrant he determined that there was probable cause.

It's worth noting that the Trump legal team also challenged whether the warrant was supported by probable cause during the prosecution, and Judge Cannon rejected their arguments.

https://www.politico.com/news/...

Some folks didn't think they'd be able to get a warrant for the search....but they were wrong. They got the warrant. And the warrant was upheld by Cannon.