A Donut alternative for Slack
CoffeeSlack does the coffee-chat part of what Donut does — random 1:1 pairings inside Slack — and it is free for every team, with no card and no cap on how many people take part. Donut is a bigger product than that, so this page starts with the cases where you should pick Donut.
We make CoffeeSlack, so we are not a neutral source. Donut’s figures below were read from their own pricing page on 8 September 2026 — check them yourself before deciding.
Where Donut is the better choice
You want calendar scheduling
Donut integrates with Google Calendar, and it is on their free tier, not held behind a paid one. We do not integrate with any calendar — our pairs get a Slack DM and agree a time themselves. This is the most common feature in the category and the clearest reason to pick Donut over us.
You want more than coffee
Donut also runs Watercooler prompts, Celebrations, a Shoutouts recognition and rewards store, onboarding Journeys, and HRIS sync. We do one thing. If you are buying a culture platform, we are the wrong shape.
You are on Microsoft Teams
Donut supports Teams. We are Slack only, and have no plans we can promise you.
Procurement needs SOC 2, SSO or SCIM
We have none of them, and no plan to claim otherwise. Donut has a published process for security reviews and questionnaires. If your security team gates the purchase, this is not a close call.
You want a vendor with a track record
Donut has been doing this since 2016 and says it serves over 20,000 teams. CoffeeSlack is new and small, and you would be early.
What both of them do
Random 1:1 pairings in Slack
Donut
Intros, matched within a channel.
CoffeeSlack
Pairs everyone who opted in, matched within the channels you pick.
Rhythm
Donut
Configurable per channel.
CoffeeSlack
Weekly, every two weeks, monthly, or a custom nth-weekday window.
Conversation starters
Donut
Built in.
CoffeeSlack
Built in, and an admin can replace them with a list of their own.
Several groups at once
Donut
Multiple channels on paid tiers.
CoffeeSlack
Independent pools, each with its own channel and its own history.
Odd number of people
Donut
Handled.
CoffeeSlack
The last three become a trio, so nobody sits out.
Two real differences
We ask people to join, rather than enrolling the channel
Each person types /coffee to take part, and joining covers a calendar month. Nobody is paired without joining, and anyone can take themselves out of a round from the dashboard without asking an admin. Your first month will be smaller than your channel — that is the trade, and it buys you people who chose to be there.
We report whether the coffee happened
Every introduction DM carries three buttons — we met, not yet, we didn’t meet — and the dashboard turns those into a response rate per round. Most tools in this category, Donut included, report how many introductions went out. That is a different number, and an easier one.
What each one costs
Donut
A free tier, then $74/mo for Standard and $119/mo for Premium on annual billing. Those are startingprices: their page says pricing “depends on number of users”, and their own estimator bills on the number of active Donut users — $74 is the figure it returns for 24 of them. The free tier limits Intros to one channel and 24 users per round, which is the wall most teams reach. They also offer pricing for non-profits, educational institutions and free Slack-based communities — if you are any of those, ask them before comparing list prices with anyone, including us.
CoffeeSlack
Free for every team right now, no card, and no cap on how many people take part. We do intend to charge later: one flat price per company rather than per person, with a free band that fits a 50-person company. The plan is published on the pricing page so you can decide with the whole picture instead of finding out afterwards.
What we do not do
- No calendar integration. Pairs arrange a time in the DM. Repeated here because it is the thing people most often assume is included.
- No group size setting. We pair two people, plus one trio when the count is odd. No 3–8 option.
- No interest or profile matching. We match on channel membership and on not repeating a recent pair. Nothing about who someone is.
- No introduction emails yet. Pairs are introduced by Slack DM only.
You can run both for a month and keep the one that sticks
Put CoffeeSlack on a different channel from your Donut one — two coffee bots on the same channel would just mean two DMs for the same people. One admin adds it, picks the channels and the rhythm, and rounds run on their own. A change of rhythm starts next month unless you tick Apply immediately.