Everything you need for verification testing
From a single one-time code to API-driven QA pipelines — SMSInbox supports your testing workflows.
Fast SMS reception
Verification codes arrive promptly — so OTP and QA tests aren't held up.
Activation (20 min)
Use a number for 20 minutes to receive codes from your selected service during testing.
Rent (24h – 8 weeks)
Keep a number for longer testing cycles and receive codes from one or more services over time.
SMS, call & voice
Test verification by SMS, by the last digits of an incoming call, or by a voice-dictated code.
Supported countries
Country-specific testing numbers where legally permitted, with expanding coverage.
Developer API
Integrate temporary numbers into automated verification test suites with a clean REST API.
Auto-refund
If a qualifying number receives no code within the allowed window, your balance is refunded.
Volume pricing
Clear tiers based on your usage, suited to teams running ongoing test workflows.
How activation & rent compare
Choose based on what you are testing and how long you need the number.
Activation
A short-lived number used for 20 minutes to receive codes from one selected service. Ideal for one-time OTP and verification testing. Activation supports three verification methods: by SMS (the code arrives in a message), by number (the last digits of an incoming call are the code), and by voice (the code is dictated during a call).
Rent
A number held from 24 hours up to 8 weeks, able to receive codes from one or more services over a longer testing period. Best when you need a stable number across a test cycle.
If a feature isn't listed on the site yet, it's currently under development. Check back, or contact support@smsinbox.io.