> For the complete documentation index, see [llms.txt](https://help.getmobly.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.getmobly.com/help-center/host/how-to-upload-an-attendee-list.md).

# How to upload an attendee list

If your event doesn't use Host for registration, you can upload your attendee list to Mobly as a CSV before the event. The list becomes leads attached to the event, ready for check-in when guests arrive.

> **Using Host for registration?** Skip this — registrants flow into Mobly automatically. See [How registrants flow from Host into Mobly](/help-center/host/how-registrants-flow-into-mobly.md).

## What you need

* **Check-in enabled for your org.** You'll see a **Registration** tab on each of your events when this is on. If you don't see it, contact your CSM.
* **A registration list** — your registrants exported from whatever tool collected them (your CRM, Eventbrite, a Google Form, etc.)

## Upload the CSV

1. In the Hub, open the event you're prepping.
2. On the **Registration** tab, click the **+** button to open the CSV drawer.
3. **Download the Mobly CSV template** from the drawer.
4. Convert your registrant data into the template. Required fields: **First Name, Last Name, Company Name**. Strongly recommended: **email** — makes merging back into your CRM painless.
5. Upload your filled-in CSV.
6. If any rows are missing required fields, Mobly surfaces them — you can fill in the gaps inline or remove the rows from the upload.
7. Confirm the lead count and complete the upload.

The registrants now appear in Mobly as leads attached to the event.

> **Adding more later.** For last-minute sign-ups or walk-ins you want on the list, upload another CSV with the new leads. Same template, same drawer.

## Next: check them in at the event

Once your list is uploaded, staff can check guests in from the mobile app as they arrive. See [How to check in leads](/help-center/host/how-to-check-in-leads.md).

## Related articles

* [How to check in leads](/help-center/host/how-to-check-in-leads.md) — the check-in workflow itself
* [How registrants flow from Host into Mobly](/help-center/host/how-registrants-flow-into-mobly.md) — the alternative path (auto-sync from Host, no upload needed)
* [How to prep for your upcoming event](/help-center/the-hub/managing-events/how-to-prep-for-an-event.md)