Multichannel outreach CRM: why your sequences should live in your CRM

A note on transparency. This page is written by the GTM Flow team, and GTM Flow is one of the options it describes. We say where a dedicated outreach tool is the better choice. Third-party prices come from each vendor's pricing page and carry the date we read them.

Search for «multichannel outreach CRM» today and the first page is mostly outreach tools: lemlist, Reply.io, HeyReach and their review roundups. They are good at sending. None of them is the CRM where the deal is worked after the reply, so they describe a CRM integration, not a CRM. That gap is what this page is about.

• Multichannel: one sequence mixes channels in order, for example email, then a LinkedIn invite, then WhatsApp, then a call.
• Outreach: the steps go out on a schedule, under caps per inbox and per profile, and stop for each person who replies.
• CRM: the person, the company and the opportunity are the same records your pipeline uses, not a copy kept in sync.

A sequence is only half of prospecting. The other half is what happens after: the reply, the call, the next step with a date, the opportunity in the pipeline. If the first half lives in an outreach tool and the second in a CRM, every reply crosses a border. Integrations reduce the friction, but they still decide what crosses, when and with which fields.

• The stop rule works across channels. If someone answers on WhatsApp, the email steps for that person stop too, because both channels write to the same record.
• Lists come from the CRM. You enrol a filtered list of accounts with no open deal, not a CSV exported last week.
• History is not lost. When a rep leaves, the sequences, the replies and the calls stay on the accounts.
• One bill. No per-sender LinkedIn seat, no separate cold email plan and no CRM on top.

That is how the Prospect pillar of GTM Flow is built: one sequence, four channels, on the same records as the pipeline. Replies from every channel also appear in the unified inbox.

1. Day 1, email. From one of your own inboxes, short, with a single question. The same sender is kept until the end of the sequence.
2. Day 3, LinkedIn invite. Within the limits of your profile. You can also do this step by hand: the sequence leaves it as a task.
3. Day 6, WhatsApp. Only for contacts who gave you their number and agreed to be contacted there, and under a daily cap.
4. Day 8, call. A task in Today with the whole history in front of the person who calls. After the call, the notes and the next tasks go on the record.
5. Any day, a reply. The sequence stops for that person, and the reply is read and turned into a task.

The order matters less than the stop rule. Most of what feels like spam in multichannel outreach is a sequence that kept going on LinkedIn after the person had already answered by email. For the email part on its own, our B2B cold email guide covers copy, volumes and deliverability.

For a wider map of the category, including databases and calling tools, read the B2B prospecting tools comparison. If you are replacing a cold email tool specifically, see Instantly alternatives. The planned plans of GTM Flow, the AI go-to-market platform, are on the pricing page.

• Email. Google's sender guidelines, read on 23/10/2026, ask all senders to set up SPF or DKIM and keep the spam rate reported in Postmaster Tools below 0.3%. Senders of more than 5,000 messages a day to Gmail also need SPF, DKIM and DMARC and one-click unsubscribe in marketing messages.
• LinkedIn. Limits apply per profile. A sequence should cap invites and messages for each person who sends them, and let them do any step by hand instead.
• WhatsApp. Write only to people who shared their number and agreed to hear from you there, and keep a daily cap. Our WhatsApp CRM guide covers WhatsApp's business policy with dates.
• Calls. A person makes the call. The CRM's job is to put the history in front of them and keep the notes afterwards.

In GTM Flow, addresses are checked when someone is enrolled (syntax, MX records and disposable domains), each inbox has its own cap plus a global one, an inbox that starts bouncing pauses itself, and unsubscribes are handled without anyone touching them.

• Agencies with many senders. HeyReach's Agency and Unlimited plans are designed for that, and GTM Flow is not.
• Very high email volume. Dedicated cold email tools are built for warm-up and sending at scale across many domains.
• A CRM decided by someone else. If the company runs on Salesforce or HubSpot and that will not change, a tool such as lemlist that syncs to it is the realistic choice.

If none of those apply, and the same two or three people prospect and close, keeping sequences in the CRM is simpler and cheaper. That is the case GTM Flow is built for. It is in early access: see how prospecting works in GTM Flow and ask for access from there.