Run Multi-Channel Outbound Cadences

The problem

Buyers in 2026 don’t live in their inbox. They split attention across email, LinkedIn, Slack communities, and phone. But most SDR teams still run outbound through a single channel — usually email — because coordinating cross-channel cadences is operationally painful. The tools don’t talk to each other, reps can’t see the full engagement picture, and managers have no way to measure which channel combination drives the best results.

When you do try multi-channel, the typical failure mode is inconsistency. One rep sends a LinkedIn message before the first email. Another skips the phone step entirely. There’s no enforced sequence logic across channels.

How GTMStack solves this

The GTMStack cadence builder treats channels as interchangeable steps in a single workflow, not separate systems that need to be coordinated manually.

Visual cadence designer. Build sequences with drag-and-drop steps: email, phone task, LinkedIn connection request, LinkedIn message, or manual task (for direct mail, video messages, etc.). Set delay intervals between steps and define branching logic — if a prospect opens the email but doesn’t reply, route them to a phone step; if they accept the LinkedIn request, skip to a personalized message.

Channel-aware throttling. GTMStack respects daily limits per channel. LinkedIn actions stay within safe activity thresholds, email sending follows your domain’s warmup schedule, and phone tasks distribute evenly across the day. The SDR Operations module manages all of this automatically so reps don’t accidentally trigger spam filters or LinkedIn restrictions.

Unified engagement timeline. Every touchpoint — sent emails, call recordings, LinkedIn messages, and their responses — appears on a single prospect timeline. When a rep picks up the phone, they can see that the prospect opened their email twice yesterday and viewed their LinkedIn profile this morning. That context turns a cold call into a warm one.

A/B testing across channel sequences. Test whether email-phone-email performs better than email-LinkedIn-phone for a specific persona. GTMStack splits enrollment evenly and tracks conversion rates per variant with statistical significance indicators. Read more about testing approaches on the GTMStack blog.

CRM sync per touchpoint. Each step logs to Salesforce or HubSpot via the integrations layer with the correct activity type, timestamp, and outcome. Your RevOps team gets clean activity data without reps doing manual logging.

Results you can expect

Teams running structured multi-channel cadences through GTMStack consistently outperform single-channel approaches:

• 2.5x more meetings booked compared to email-only sequences
• 40% higher reply rates when phone and LinkedIn steps follow email engagement signals
• Consistent brand experience across every touchpoint and every rep
• Complete attribution data showing exactly which channel combination converts each persona

The operational lift to run multi-channel drops dramatically when it’s one tool instead of four. That’s the real advantage — doing sophisticated outbound without needing a sophisticated ops team to hold it together.