Iframe compose-send friction drove the move.
A 32-rep SaaS running SMS Magic on Salesforce measured the per-send friction (iframe open, compose, template select, send, iframe close, sync wait) at roughly 48 seconds per SMS versus 12 seconds on Strkr. Across 25 SMS per rep per day for 32 reps, the reclaimed time ran roughly 4.8 hours per day. The team moved to Strkr for the compose-on-record pattern.