Ask HN: Do you build notification processing infrastructure in house?

Hey all!

Does anyone here work on notifications processing pipelines/infrastructure? Specifically triggering of push, email, sms, etc. I’d love to chat with you if you do and understand your architecture designs more and bounce some ideas off of you!

Specifically, I’d love to learn: Do you build notification event processing in house or use a 3rd party API? What are your biggest problems with building/managing this pipeline internally?

For context, when I worked at a tech company, I worked on “saving a search” (think saving a search on Autotrader for any Honda car for less than $20,000). It was cumbersome managing, setting up, and debugging these notification systems. I was curious if others had similar frustrations.