Choosing One Provider or Two for Email and SMS Event Notifications

The article argues that teams should keep bounce classification and recipient suppression inside their own application rather than relying on a transport provider. It recommends picking the simplest transport setup that meets reliability needs, since one combined email-and-SMS provider reduces integration and monitoring work. Separate specialist providers make sense when channels have different owners, policies, or reliability targets, but they add two callback models and reconciliation paths. A primary-plus-standby setup is treated as a further option that needs defined failover events and tested recovery to avoid duplicate messages or bypassed suppression. The author stresses that price alone should not drive the decision, because repeatedly sending to invalid addresses creates operational cost.