Reasoning
Per-source scores were collapsed to a single representative value per domain. For Capterra, a weighted average was computed from all valid 0–5 ratings using their confidence scores (ignoring obviously invalid values like 7, 9, 10). Other sources (PCMag, Trustpilot, TheCXLead, EmailTooltester) contributed one representative value each, weighted by the sum of their confidences. The final value is the weighted average across domains, using domain confidence totals as weights.