Hi, We are looking to implement 2FA - so that users would be sent a Verification code over their Email and SMS to their phone.
We faced some limitations with Amazon SNS where we could either send the verification code to email OR to the phone number, while we want to send it to both.
We also are looking to make the 2FA more flexible by adding any other options later on.
What are the best alternatives to SNS for this use case and purpose? Looked at Twilio but want to explore other options before making a decision.
Would be great to know what the experience with Twilio has been, especially the limitations/issues with Twilio...
Appreciate any input from users of Twilio and others who have had similar use cases.
Hi Ravi - I spent 5 years at Twilio and am currently over at Messagebird (CPaaS). - Generally, there are two options: - use SMS API and own the logic on your side (Phone number provisioning, token creation, token validation, retries, fallback etc.) - Verify Solution (which both Messagebird and Twilio offer): Verify provides a purpose-built API. Number provisioning (especially challenging globally), token creation, retries, fallback methods, etc. are managed by the verify solution
Messagebird helps the largest senders with use cases like OTP globally, and you have the choice own the development, or use the Verify API. Anecdotally, our Global network, and the maturity of our network, makes us stand apart in regards to global reach and deliverability.
Happy to chat, feel free to reach out.
I would recommend Twilio as well. If you're objective is to get off the ground quickly and build something that is robust without much effort, Twilio really nails the developer experience and easy of use. It's also light on any kind of set up or infrastructure as code. That said, it's a lot more expensive that AWS alternatives, so if you're operating at scale you may want to look closer at AWS options.
