The landlord sent the renewal. Rent is up. You can absorb it two ways, take a third roommate, or move in August. Your roommate is at their partner's four nights a week and still thinks the current split is "basically even." The kitchen conversation keeps becoming the sink.
Pick one decision. Put it on a page.
One shape, one ask
Choose the response shape before you write. If the lease must be signed by someone, that is a decision — they own the outcome with you. If you want their feel for a third person before you list the room, that is an opinion. If you already drafted quiet hours and want the holes, that is a review.
Do not mix them. "Thoughts on the lease, and also quiet hours, and also my friend Maya" is three conversations. You will get Maya, because Maya is easy.
Close the list for the one you mean. Example: we each pay the raised rent 50/50, or we take a third person at $X and split the rest, by Friday. State your lean and the disconfirmer. "I lean a third person unless you can do 50/50 through December."
Write the numbers as stated: current rent, the renewal figure, the date the landlord needs it, what the lease says about additional occupants. Your read — that they can afford it because of the raise they mentioned — is an assumption, and it should look like one.
The dishes are a different household
A briefing can carry the lease math without the sink. If the sink is the actual problem, it needs its own short ask on another day. Putting it here is how a renewal becomes a character study.
They may not be a RelayLink contact yet. Inviting someone to be a contact is the path if they already have an account; if they do not, email and a link are enough. You still approve the send. The session has the sentence about their partner's shoes in the hall. That sentence stays.
Do not attach the lease PDF. Quote the occupant clause and the date. If they want the file, they ask.
A sufficient reply is short
"50/50, I'll sign Friday." "Third person, but I want to meet them." "I'm moving in August." Any of those is a complete answer. A kitchen talk can follow. It should follow a page, so you are not both reconstructing the landlord's email from memory.
A reply is how you know they have it. A fetched link is not a read. You will not see whether they told their partner. If you need to end the channel later, block is silent — which is a reason not to use a briefing as a sneak test of whether they still read your mail.
When the renewal is sitting in a session and the sink is calling, connect your assistant and send the one household decision first.