Public Wi-Fi Asks for Your Email: What to Do

You open your laptop at the airport, pick the free network, and a page appears: “Enter your email to connect.” The network owner wants a way to send you offers. You just want to check your flight. Here is how to get online without handing over your real address, and how to stay safe once you are connected.

Getting past the sign-in page

The sign-in page usually loads before you have internet access, so you need the temporary address ready first.

1. Before you connect, or using mobile data, open TempDog and copy your address.
2. Connect to the Wi-Fi and paste the address into the sign-in page.
3. If the network sends a confirmation link, open it from the TempDog inbox.

Some sign-in pages give you a few minutes of access to confirm your email. That is enough to open TempDog and click the link.

Turn on Close after first email if you only expect one confirmation message. The address closes itself 10 minutes after it arrives.

Is public Wi-Fi safe?

Much safer than it used to be. The FTC says most websites now encrypt your data, which protects it on public networks. Look for a lock symbol or https in the address bar.

The FTC’s advice for public Wi-Fi comes down to a few habits:

• Use strong, different passwords and turn on two-factor authentication where you can.
• Keep your system, browser and security software updated, ideally automatically.
• Remember that encryption does not mean a site is honest. A fake site can use https too, and anything you type there goes to the scammer.

Extra care on shared networks

• Check the network name with staff. Scammers sometimes set up a network with a similar name, such as “Airport_Free_WiFi” next to the real one.
• Avoid entering card details on a page that appeared right after connecting, unless you are sure it is the real network’s payment page.
• Turn off automatic connection to open networks on your phone.
• If you have one, a VPN adds another layer of protection.

Why not just use your real email?

Wi-Fi sign-ups often feed marketing lists, and some share them with partners. A temporary address gets you online and keeps your real inbox out of those lists. When the timer ends, the address is deleted and never reused.

Spotted a scam? Report it at ReportFraud.ftc.gov.

More: how to stop spam emails and was my email in a data breach?

Sources

• Federal Trade Commission, Are Public Wi-Fi Networks Safe? What You Need To Know, consumer advice, updated March 2026.