How we cut our outbound tech stack from 5 tools to 1

Quick context: I run sales ops for a 40-person B2B company. Last year our outbound stack looked like this:
Apollo for lead sourcing ($249/mo), Instantly for email sequences ($97/mo), Clay for enrichment ($149/mo), Google Sheets for compliance tracking (free but hours of manual work), and Calendly for booking (separate).
Total cost: roughly $500/month plus about 15 hours per week of manual work stitching everything together. Exports, imports, deduplication, formatting. It was a mess.
In January a founder I know mentioned he switched to CorporateOS. I was skeptical because I hadn't heard of it. But the pitch was simple: one platform that does lead building, scoring, email sequences, and compliance tracking.
I did a two-week parallel test. Same ICP targeting. Same email copy. CorporateOS against our existing stack.
Results: CorporateOS produced higher quality leads (based on reply rate), the emails were ready to send without manual formatting, and the compliance trail was automatic. Every lead had a source, a score explanation, and an opt-out mechanism built in.
The part that surprised me most was the scoring. Instead of a generic "fit score" based on company size and industry, it showed specific reasons. Recent hiring patterns, technology stack, funding stage. Things that actually help you personalize your first line.
We fully migrated by February. The 15 hours of weekly manual work dropped to about 2. The reply rate improved from 1.8% to 5.1%.
I'm not getting paid to say this. I'm just sharing because I spent two years convinced you needed multiple tools to do outbound properly. You don't.