Reasoning
Across multiple credible sources (PCMag, Software Advice, Nutshell's own site, and SalesDorado) quotes/invoicing is confirmed, with Trustpilot also supporting it albeit with lower confidence. Since the majority of distinct, credible sources indicate the feature exists and there are no credible opposing sources, the attribute is true. Duplicates from the same domain are treated as a single opinion, per the guideline.