You're at the airport. Your flight is an hour late and your mobile data is about to run out. You find the free Wi-Fi, connect, and a page pops up asking you to "Enter your email address to access the internet. I agree to receive offers and promotions." The box is already ticked. Time is ticking and you need to get online. You type your main address and move on.
A few weeks later, emails start arriving from brands you've never heard of, and you can't work out where they came from. This article is about what you could have done differently at that moment.
Why does the Wi-Fi login page ask for your email?
The page that opens when you connect to a public network is technically called a "captive portal". You're connected to the network, but you can't reach the internet until you fill in the form or accept the terms. Cafés, shopping centres, hotels, airports and some public hotspots run by local authorities all use this method.
There are a few reasons they ask for an email:
- Marketing lists. This is the most common one. In return for "free" internet, your address goes onto a promotional list. Pre-ticked consent boxes are a giveaway.
- Visitor analytics. The business wants to see how many people come in and how often they return.
- Identifying users. Some venues have their own reasons, or obligations, to identify who uses their network. Many of them do this through a text message verification.
So the page in front of you sometimes asks for just an email, sometimes for a phone number and a text message code, and sometimes for a social media login. Each needs a different approach.
What can you do with each type of login?
| What the login page asks for | What you give away | Does a temporary email help? |
|---|---|---|
| Just an email address | Your address may end up on a marketing list | Yes, this is one of the best uses for it |
| Email plus a verification link | You prove your address is real and reachable | Yes, but you need internet to reach the verification email (see below) |
| Phone number plus text message code | Your number is recorded and sometimes added to text marketing | No, a temporary email can't receive text messages |
| Social media login | You may grant access to your profile information | No; avoid this method if you can |
| Just an "I agree" button | Nothing | Not needed |
How to use a temporary email on a Wi-Fi form
There's a catch most people don't think of. Until you get past the login page, you have no internet. That means you may not be able to open a temporary email site at that moment. There are a few ways around it:
- Get an address with mobile data first. Before connecting to the Wi-Fi, if you have even a little data left, open the Geçici Mail page. The address is created automatically; grab it with the COPY button.
- Then connect to the Wi-Fi and paste the address into the email field on the login page.
- Check the consent boxes. Untick any optional marketing boxes. Even if the address is temporary, make it a habit.
- If a verification email is required, some login pages give you a few minutes of limited access so you can open it. Use that time to switch to your temporary email tab. The inbox refreshes itself every 5 seconds; when the email arrives, a sound plays and a new email notice appears in the tab title.
- Click the verification link and finish connecting.
If the verification email doesn't arrive, some networks may recognise and reject temporary addresses, or delivery may be delayed. We've collected the things to check in not receiving emails on a temporary address.
What about networks that ask for a text message code?
A temporary email can't help here; our service only receives email. Your options are limited. Either give your number or don't use that network. Before giving your number, read the consent text on the page and leave the marketing box unticked. Turning on your phone's hotspot is often the safer choice, if your data allowance stretches that far.
Staying safe on public Wi-Fi
The email question is only one side of it. The other side is that you're sharing the network with dozens of strangers. On open networks, part of your traffic may be visible to someone else on the same network, or you might be connected to a fake access point. These are the rules we follow on such networks:
- Confirm the network name. "Airport_Free_WiFi" and "Airport Free WiFi" may be two different networks. If you're not sure, ask the staff.
- Don't enter details on sites without https and a padlock in the address bar. https encrypts the content of the connection; most sites work this way today, but checking takes a second.
- Put off sensitive tasks. Leave online banking, big purchases and password changes for mobile data or your home network.
- Don't click past browser warnings. If you see a certificate warning like "Your connection is not private", don't continue to the site.
- Turn off file sharing and auto-connect. When you're done, remove the network from your device with the "Forget" option so it doesn't connect automatically to a network with the same name next time.
- Consider a VPN you trust. It hides your traffic from curious people on the local network. Be careful with free, unknown VPN apps, though.
The limits of this approach
A temporary email stops the address you gave the Wi-Fi form from following you around. It doesn't make the network itself safe. The network provider can still see your device's technical details and connection logs. In other words, a temporary address solves the "ending up on a marketing list" problem; for "staying safe on an open network" you need the precautions above.
One more reminder. The address goes out of use after a few hours, and incoming emails are deleted after 24 hours. If you go to the same café every week and the network asks for verification each time, you can return to the same address with your recovery key. If you want the basics of how a temporary email works, start with what a temporary email is.
FAQ
Why does public Wi-Fi ask for my email address?
Mostly to build a marketing list and analyse visitors. Some venues ask for text message verification instead of an email to identify users.
Can I enter a temporary email on a Wi-Fi login page?
Yes, if the page only asks for an email you can use a temporary address. Since you won't have internet until you get past the page, getting the address beforehand with mobile data makes things easier.
Does a temporary email work on Wi-Fi that asks for a text message code?
No. Geçici Mail only receives email, not text messages. On these networks you either give your number or use your phone's hotspot.
Is it safe to do online banking on public Wi-Fi?
It's not recommended. Banking sites protected by https encrypt your traffic, but because of risks like fake access points, it's better to leave sensitive tasks for mobile data or a network you trust.