Email and SMS verification are one of the best authentication methods there are. Both with SMS or email verification, the friction added to the login or signup process is minimal. Even though this adds one more step for the user, the simplicity of the verification process makes it an optimal method to add security without damaging conversion rates. But, which mean is better? Even though this depends highly on your business and your audience preferences, we offer you some highlights on each method.
Pros of OTP email verification
Email verification is frequently used, for several reasons. On one side, users are more likely to share their email address than their phone numbers. Since email addresses are already mandatory in a signup process, users may be less reluctant to verify their identity with this mean.
Another pro of email authentication is its price. Sending emails is way cheaper than sending SMS. If your business is on a budget, email authentication may seem like a better option.
Cons of OTP email verification
On the not-so-bright-side of email verification, we find security. Emails may suffer from phishing, viruses and so on. If the user account is hacked, the verification process will be affected.
Pros of OTP SMS verification
SMS authentication usually minimizes friction. Generally -especially in a mobile-first context-, the user doesn’t even have to leave the interface to see the OTP and enter it. Quick for your business, painless for the user.
Security is another bright side of SMS verification. Faking a phone number is much harder than faking an email account. User’s identity has one more level of ‘realness’ compared to email verification.
Cons of OTP SMS verification
Sending SMS is more expensive than sending an email. Plus, some users may hesitate before entering their phone numbers. This may affect your conversion rates.