Stop chasing event vendors for missing information.
Collect documents, permits and operational details in one place. OneHappening automatically reminds incomplete vendors and shows who is ready for event day.
No vendor accounts · Import your spreadsheet · Keep your existing ticketing system
Built for food festivals, markets, fairs and local events coordinating dozens of independent vendors.
Vendor readiness
18 of 34 readyNordic Coffee Cart
ReadyFood & beverage · 10 of 10 complete
Kaisla Ceramics
Needs reviewRetail / craft · Insurance certificate submitted
Töölö Street Pizza
BlockedFood & beverage · Missing insurance · due 4 days ago
Aalto Woodworks
In progressRetail / craft · 6 of 9 complete · next due 21 Nov
Helsinki AV
BlockedAV / production · Power requirement overdue
- 1Import your vendors
- 2Choose what each must provide
- 3OneHappening collects and reminds
- 4See exactly who is ready
The problems that actually cost you the week before
- Missing permits discovered the morning the event opens
- Insurance documents buried somewhere in a reply chain
- Asking the same vendor for the same thing a third time
- No reliable answer to “is every vendor ready?”
With OneHappening
Every vendor ready — or you know exactly what is blocking them.
One checklist per vendor, chased automatically. Missing, late and rejected items sit at the top of your dashboard; finished vendors get out of your way.
Vendors respond by link — or just reply to the email
Each vendor gets a personal link with no account and no password. If replying to the email is easier for them, that works too: OneHappening connects the reply and its attachments to the correct item on their checklist.
Anything we cannot place with certainty waits for you to confirm. Nothing is ever approved on a guess.
Every event gets its own address
customer-summit-a7k3@in.onehappening.com
Vendor replies land there. So do threads you forward or CC from your own mailbox. No integrations, no mailbox access.
Your event data is private to your account, never sold, and never used to train AI models. Delete an event and everything stored for it goes with it. How we handle your data.
Import your vendor spreadsheet today
Send the first requests in minutes. Vendors respond by link or email, and you see exactly who is ready. OneHappening does not replace your ticketing, accounting or floor plans — it does one job.