Add every opted-in WiFi guest to your EmailOctopus list automatically as a subscribed contact, so your list-join automations fire the moment they sign in. Native integration. 30-day free trial.
The EmailOctopus integration is a native CaptiFi connector, shipped in August 2026. You create an API key in your EmailOctopus account, copy the ID of the list you want WiFi guests to join, and paste both into the CaptiFi Integrations page, a job of about eight minutes end to end. From that moment every WiFi guest who opts in to marketing on your splash page is added to that EmailOctopus list as a subscribed contact, carrying their email address and their first and last name when your splash form collects them.
EmailOctopus organises contacts around lists, so unlike some CaptiFi connectors the List ID is required rather than optional: CaptiFi always needs to know exactly which list guests should join. That constraint is also what makes automation immediate, because joining a list is the trigger EmailOctopus automations listen for, so a welcome email can land while the guest is still sitting in your venue. The Test connection button checks the API key and the List ID together, so a mistyped List ID is caught before a single guest syncs, and the API key can be rotated at any time by saving a new one. The sync runs server-side through a queued job, so contacts appear in EmailOctopus within minutes of sign-in with no browser plumbing involved.
Repeat visits are handled cleanly. Contacts are matched by email address, so a regular who signs in every week updates the same EmailOctopus contact rather than piling up duplicates, and anyone who unsubscribes in EmailOctopus stays unsubscribed: CaptiFi never re-adds them. Only guests who opt in to marketing are ever sent, so the list EmailOctopus markets to is permission-based from the start. Each venue can point at its own list, or several venues can share one. The integration works with every EmailOctopus plan, including the free tier, and on the CaptiFi side it is available on the Growth plan and above, with the 30-day free trial running at Growth level.
Every opted-in WiFi guest is added to your EmailOctopus list as a subscribed contact within minutes of signing in, carrying email and name where captured, with no CSV exports, no Zapier account and no task limits.
Joining a list is the trigger EmailOctopus automations listen for, and CaptiFi adds guests straight to the list you choose, so a welcome email can reach a guest before they have left the building.
The List ID is required and the Test connection button checks the API key and the list together, so a mistyped ID is caught at setup rather than discovered weeks later as an empty list.
Contacts are matched by email so repeat visitors update the same record, only opted-in guests are ever sent, and unsubscribes in EmailOctopus are respected: CaptiFi never re-adds a contact who has opted out.
In EmailOctopus, open Account, then Integrations & API, and click Add key. Give it a name you will recognise later, such as CaptiFi WiFi. EmailOctopus shows the key once only, so copy it straight away.
Open the list you want WiFi guests added to, or create one such as WiFi Guests. The List ID is the long code in the browser address bar while the list is open. Copy it.
On the Integrations page in your CaptiFi dashboard, open the EmailOctopus card for the venue and paste the API key and the List ID. Both fields are required. Save, then click Test connection: the test checks the key and the list together, so a mistyped List ID is caught immediately.
The venue reads Connected but paused until you flip the toggle to Enabled. Enabling is not retrospective: only guests who connect after you enable the integration are synced.
Opted-in WiFi guests are added to your list as subscribed contacts within minutes of signing in, any automation that starts when someone joins the list fires straight away, and repeat visits update the same contact by email rather than creating duplicates.
A cafe points the integration at its WiFi Guests list, so a first-time visitor gets the EmailOctopus welcome automation with a loyalty nudge before they have finished their flat white, and every repeat sign-in keeps their contact current for the monthly newsletter.
A restaurant and bar group runs one EmailOctopus account across several sites and points each CaptiFi venue at its own list, so quiz-night emails go to the pub crowd and tasting-menu launches go to the diners who actually visited that kitchen.
A holiday-let operator on the EmailOctopus free plan shares one list across all its properties, building a permission-based guest database from WiFi sign-ins alone and sending a rebooking offer each season without ever exporting a CSV.
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