Note from Paolo is a written note in Dishonored 2.
[Don't worry, one of my people watched you for a while, but it means nothing to us, whoever you are. You won't hear from me again, but] You did the Howlers a favor, coming into Batista and getting rid of the Vice Overseer. Those Abbey pricks were out for my blood. I'm not going to forget what you did for me, regardless of how shit turns out in Serkonos. You have my word.
Now, with Byrne shuffled off, anything's possible here in Karnaca. A city run by the people of the alleys, the waterfront streets, the mines. Not like under the Duke, where only the palace-born got a share of the good stuff.
Anyway, I don't know whose side you're on and I don't care, but I wanted to give you a little something for your trouble anyway.
The note can be found on the table in the briefing room aboard the Dreadful Wale, after the mission A Crack in the Slab and if Corvo Attano or Emily Kaldwin sided with the Howlers in the mission Dust District. If they eliminated Byrne and did not bring his corpse to Paolo, the two sentences in the bracket will appear in the text.