A sales director at a 45-person tech firm decided to abandon Slack entirely and move all team communication into their CRM. The logic was bulletproof: fewer apps, faster customer context, lower licenses. Six months later, they'd re-adopted Slack alongside the CRM chat anyway, paying for both. The CRM chat sat unused except for customer-specific threads. Turns out consolidation and efficiency aren't the same thing. This is a common misreading of what consolidation actually solves. Moving team chat into your CRM doesn't eliminate fragmentation—it usually creates a new kind of it, where internal chat and customer communication collide in workflows designed for one, not both. Before you eliminate Slack or Teams, you need to understand which problems consolidation actually fixes, and which it makes worse. The consolidation promise vs. the reality The pitch for built-in CRM chat is appealing: one platform, one inbox, no context switching. Your team sees deal notes, customer history, and conversation in one place. No bouncing between Slack and your CRM. No copy-pasting context. No 'did someone already tell this client that?' But this assumes your team uses the CRM for everything—which most don't. Slack (or Teams, or Lark) becomes the default communication layer because it's faster, searchable across your entire company, and designed for the way people actually talk. Your CRM is task-focused: manage deals, log calls, update pipelines. Those are different jobs, and different tools usually do them better when they stay separate. When you force chat into the CRM, one of two things happens: Your team keeps using Slack anyway for anything that's not tied to a specific deal, and the CRM chat becomes a compliance layer for customer-facing threads. You're paying for both and getting the worst of both. Your team migrates to CRM chat , and internal communication (strategy, brainstorming, non-deal talk) gets scattered across dozens of deal threads instead of living in one coherent channel. Context becomes harder to find, not easier. The second outcome is especially damaging. A team of 10 might get away with it. A team of 45 can't—you'll have sales reps searching through 30 deal threads trying to find the conversation about pricing objections, instead of pulling it up in a dedicated #pricing-objections channel where it lives alongside best practices and closed examples. When native CRM chat actually works Consolidation does work in specific, narrow conditions. If you hit all of these, you can probably eliminate Slack: Fewer than 15 team members in the sales and customer-facing function. Below this size, deal and non-deal communication aren't meaningfully different. Every conversation is tied to a customer or deal. If your team spends less than 20% of communication time on non-deal topics (onboarding, process, troubleshooting, culture), CRM chat won't fragment your knowledge. Your CRM's chat UI is genuinely fast. If opening a deal and reading chat history takes more than 5 seconds, your team will drift back to Slack. Most CRM chat tools are slower than Slack at search, threading, and notification. You're okay with losing casual discovery. In Slack, someone posts a useful insight in #sales and 20 people see it. In deal-threaded CRM chat, only people assigned to that deal see it. You lose that serendipity. The teams that succeed with CRM-only chat are usually small service firms where every customer is a deal, every deal has 2–3 core people, and the work is linear. A 10-person consulting team selling retainers? This works. A 40-person SaaS sales org with complex deal teamwork? It doesn't. The real cost of separating chat from CRM So if consolidation often fails, what does the alternative cost? You're paying for Slack (or Teams) at roughly $8–12 per person per month, plus your CRM at $50–300 per sales rep per month depending on the platform. That feels expensive. But the alternative—forcing all communication into your CRM—costs you in other ways: Adoption friction: Your team won't use the CRM's chat if it's slower or less intuitive than Slack. You'll end up supporting both anyway, burning money and time on integration that nobody uses. Context fragmentation: Internal chat and customer chat are different problems. Mixing them in one interface means you're either optimizing for one at the cost of the other, or building a bloated system that does neither well. Dedicated team chat can be as simple as you need it to be. Customer chat in a CRM has to balance deal context, history, and visibility. Knowledge loss: Slack's search and channel structure is built for discoverability. A 12-month conversation in #pricing-objections is easy to find and audit. A 12-month conversation spread across 200 deal threads in CRM chat is impossible to surface later. Onboarding cost: New hires learn Slack first, then your CRM. Reversing that adds 2–4 weeks to ramp time because they have to learn the CRM just to get messages. If your team is 30+ people, the