Why not SMS?
Sending one-time passwords for your app or website sign-in sounds simple, but in reality it can get very expensive and complicated fast. Every SMS OTP you send costs money, and prices are different in every country and for every telecom operator. You also have to deal with delivery issues, message splitting, time-zone rules, and users changing their numbers. On top of that, you need have protection from traffic generation.
It gets even harder when you try to use a registered company Sender ID (SID) so your messages show your brand name instead of a random phone number. Many countries require special registration for SIDs, and each one has its own forms, documents, rules and approval times. In some places you need local business papers, in others you must provide sample messages, opt-in proof or even sign contracts with each mobile operator.
For a small company with only a few sign-ins per month, organizing all of this is even more painful and inefficient. You still have to deal with complex integrations, compliance rules, sender registrations and monitoring, but you don’t have the volume to justify the time, money and people required to manage it properly.
How Selivery can help?
Selivery solves all of this pain by letting you send branded OTP messages worldwide without fighting with every local operator on your own. Your users see a trusted sender name instead of a random number, and you can also deliver codes via secure end-to-end encryption, so even Selivery itself cannot read the OTP content. On top of that, Selivery gives you 10 000 free OTPs every month, which is more than enough for many startups and small projects to handle their sign-in and verification traffic without worrying about cost from day one.