Ad attribution that follows a click from Meta, Google or LinkedIn through your site into Stripe and your CRM, then pushes the revenue back to the ad platforms.
What is
Cometly
Cometly spent its first years serving ecommerce and info-product advertisers and now sells itself as attribution built for B2B SaaS. The job it does has stayed the same through that turn. A first-party pixel watches your site, ad spend flows in from Meta, Google, LinkedIn and TikTok, and Stripe and your CRM report back what the money became. The integration list is where the history still shows. HubSpot, Salesforce, Attio and Stripe sit next to ClickBank, BuyGoods, MaxWeb, WebinarJam, ClickFunnels, SamCart and ThriveCart, which is the toolkit of an affiliate offer and a webinar funnel rather than a twelve-month enterprise deal. Tracking is the part they have clearly put the engineering into. The Comet Pixel serves from your own subdomain and stitches sessions by IP, user agent and device fingerprint instead of a cookie, while server-side events catch the billing and CRM moments a browser never sees. Eight attribution models run over that data. We would not put a B2B GTM client on Cometly. Nothing in it names the anonymous companies reading your pricing page, so a journey only begins at a form fill and most of a buying committee never fills one. Where it does earn the money is a paid-heavy budget pointed at a self-serve Stripe checkout.
Integrations and the modern GTM stack
Cometly counts 76 native integrations, and the mix of them says more about the product than the count does. Ads, payments and CRM are the spine, and everything else exists to turn a form, a booking or a checkout into an attributable event.
Meta, Google, LinkedIn, TikTok, Microsoft and Reddit | Thirteen ad connections in total, including X Ads, Taboola, AdRoll and The Trade Desk. Spend and click data come in through OAuth and attributed conversions go back out server-side through each platform's Conversion API, which both plans include with no cap on connections. |
Stripe, Chargebee and Paddle | Stripe is the anchor and the reason the B2B SaaS pitch holds together. Subscriptions, trials, upgrades, MRR and ARR attribute back to the ad that started them, and Chargebee, Paddle, SamCart and ThriveCart cover the rest of the checkout layer. |
HubSpot, Salesforce, Attio, Pipedrive, Close and HighLevel | Ten CRM connections stream deal stages, lifecycle changes and closed-won events into the attribution model as they happen. This is also the only place account-level context enters Cometly, so your journeys are only as complete as the records your reps keep. |
Comet Pixel and server-side events | One script tag hosted on your own subdomain, plus a documented cometToken() call you pass as comet_token from your backend so an OAuth signup or a billing event stitches to the right visitor. This is the route for anything the integration list does not cover. |
Snowflake, BigQuery, Redshift and MCP | Warehouse export, two-way CRM sync, the Cometly API and an MCP server that exposes attribution data to Claude or ChatGPT. All four sit behind Enterprise, so a Core customer works inside the dashboard and whatever Zapier or webhooks can carry. |
Zapier, Make and webhooks | Five automation connections including Slack for AI-written weekly reports, and a generic webhook endpoint that accepts an event from anything. Cometly points at Zapier as the answer for niche tools, which keeps the long tail cheap to wire up. |
Forms, scheduling, chat and calls | Typeform, Jotform, Gravity Forms, Formstack, Calendly, Acuity, Intercom, Drift, CallTrackingMetrics and Nimbata. Every one of these exists to mark the moment an anonymous visitor becomes a name, because that moment is where a Cometly journey actually starts. |
ClickBank, BuyGoods, MaxWeb, Whop and WebinarJam | Ten ecommerce connections, three webinar platforms and both ClickFunnels versions sit in the same list as Salesforce. If you want evidence of who Cometly was built for before the B2B rebrand, this row is it, and those integrations are still maintained. |
What is missing | No company identification or reverse IP lookup, so anonymous traffic stays anonymous. No Clay, no G2 or intent data, no LinkedIn organic, and Cometly says plainly that it does not replace Mixpanel or PostHog for in-product behaviour. Warehouse access needs the Enterprise contract. |
Pro’s
The pixel serves from your own domain and stitches by fingerprint rather than a cookie, so the iOS, Safari and ad-blocked traffic that the Meta Pixel and GA drop still reaches the report.
Stripe is a first-class source, so trials, upgrades, MRR and churn attribute back to an ad without an analyst rebuilding subscription revenue in a spreadsheet at the end of every month.
Conversions sync server-side back into Meta, Google, LinkedIn, TikTok, Microsoft and Reddit, so the measurement improves the targeting instead of sitting in a dashboard nobody spends against.
Eight models run over the same data and the window stretches from one day to lifetime, which suits a SaaS deal that closes eight months after the click that started it.
The 76 integrations cover the forms, schedulers, chat tools and checkout pages a small growth team really runs, and most of them connect through OAuth or a single webhook.
Agent takes plain-language questions about spend and pipeline in the app or in Slack, and the Enterprise MCP server hands the same data to Claude or ChatGPT.
Cons
There is no reverse IP or company identification anywhere in the product, so the account reading three pricing pages stays anonymous until a form gets filled, and that gap is exactly where B2B attribution needs the most help.
Identity stitching runs on IP, user agent and device fingerprint, and fingerprinting is the technique European regulators treat hardest under ePrivacy and GDPR, so a Dutch or German buyer will ask questions the published DPA does not settle.
The pricing page carries no numbers and there is no free trial, and the figures third parties report start near $750 a month plus a one-time $1,500 onboarding fee before you have seen a single report.
Support for ClickBank, BuyGoods, MaxWeb, Whop, WebinarJam and ThriveCart tells you where the customer base came from, and a roadmap serving affiliate offers and B2B pipeline at once will keep splitting its attention.
Cometly lists a team of ten and SOC 2 Type 1 as in progress rather than finished, so a security review at an enterprise buyer stalls in a way it would not with Dreamdata or HockeyStack.
Pricing
Core
Custom Quote only, sized on your monthly pageviews, 20% off on annual billing
Comet Pixel and server-side tracking
Eight multi-touch attribution models and custom events
Account journeys, customisable dashboards and analytics
Agent for plain-language questions
Conversion API to every major ad platform
AI Ads Manager, audiences and 70+ integrations
Enterprise
Custom Quote only, adds warehouse access and support, higher pageview and AI credit allowances
Everything in Core
CRM and warehouse sync with Snowflake, BigQuery and Redshift
MCP server and the Cometly API
Dedicated solutions engineer and success manager
Custom feature and integration builds
First access to new features
Professional Onboarding
$1,500 one time Reported by third parties as mandatory and billed separately, offered in place of a free trial
Dedicated onboarding specialist
Pixel and server-side install
Ad platform, CRM and Stripe wiring
Event and dashboard configuration
How it fits your stack
Alternatives
At a glance
First-party pixel served from your subdomain
Fingerprint stitching without cookies
Eight multi-touch attribution models
Stripe MRR, ARR, trials and expansion
Conversion API back to Meta, Google, LinkedIn
76 native integrations
Agent answers questions in plain language
Warehouse sync and MCP on Enterprise
Read some of our client stories
GTM Workflows
Learn how to use GTM tools in workflows
Guides and tutorials to get the most from your workflows
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