Developers
Magic Link vs OTP Code: Which Sign-In Method Should You Use?
Both remove the password. They fail in different ways, and the best choice depends on where your users sign in from.
How each works
- Magic link: a one-time link is sent to the user, and clicking it signs them in.
- OTP code: a short code is sent, and the user types it into the same page.
Comparison
| Point | Magic link | OTP code |
|---|---|---|
| Same device | Easy | Easy |
| Different device | Works only if the link opens there | Works anywhere |
| Phishing | Link can be forwarded or spoofed | Code can be phished too |
| Email scanners | Some prefetch links and consume them | No such problem |
| Support | Link expiry confuses users | Typing errors |
Pick the code when
- Users sign in on a computer from a code on their phone.
- Your emails are scanned by security tools.
- You need the same flow for SMS and email.
Pick the link when
- Users sign in on the same device as the email.
- You want the fewest steps.
- The risk of the account is low.
Make either safer
- Single use and short expiry.
- Bind the request to the browser that asked.
- Rate limit requests.
- Show a clear message about what the email is for.
Security details
- Single use.
- Expire in minutes.
- Bind to the requesting browser.
- Invalidate on a new request.
User experience details
- Explain what the email is.
- Show 'check your email' with a resend timer.
- Let users type a code if the link fails.
Questions people ask
Which is more secure?
Neither is automatically better. Binding to the requesting browser and short life matter more.
Can I offer both?
Yes. Many products send a link and a code in the same email.
Related guides and pages
Create a free OtpGet account and try it with a small balance.