The expression you use, "Here is the url for tomorrow's session." appears to be fine as it really is, but you could possibly relate your electronic mail to your earlier discussion with the Conference: "Here's the link on the Assembly being held at ten:thirty AM tomorrow, that we discussed yesterday: https://567tv-mobile-game-downloa44219.p2blogs.com/35405095/top-latest-five-567tv-entertainment-competition-urban-news