Attribution

Multi-touch attribution for events in Salesforce and HubSpot

Get events into multi-touch attribution in Salesforce and HubSpot: the touches to log, the objects they use, how each model splits credit, and the guards.

Prasad Subrahmanya avatar
Prasad Subrahmanya
Founder & CEO, Luminik, October 22, 2026, 7 min read
Key takeaways
  • Multi-touch attribution can only credit an event for touches the CRM can see. The pre-event email, the booth conversation and the dinner sit in a sequencer, a scan export and a spreadsheet, outside campaign activity.
  • In Salesforce, add every person you met as a Campaign Member, keep each touch as an activity, and attach contacts to Opportunities as contact roles. In HubSpot, record the event as a campaign and marketing event so attribution reports count the interactions.
  • Position-based models give little credit to an event in the middle of a cycle. Keep event-sourced and event-influenced pipeline in their own fields, with a 90-day window and a review of weak matches.

Multi-touch attribution credits an event only for the touches your CRM holds. Event touches that live in a sequencer, a scan export or an RSVP spreadsheet never reach it, so the event shows up as zero, or as a number finance does not trust. Below: why events drop out, how each model splits credit when they do not, and the setup in Salesforce and HubSpot that puts event touches where the model can count them.

Definition

Multi-touch attribution

splits the credit for an opportunity across the recorded touches that led to it, using a model such as first touch, last touch, linear, U-shaped or W-shaped. It can only credit touches stored in the CRM against the people on that opportunity.

Why events disappear from multi-touch attribution

A multi-touch model spreads credit across the touches recorded on the people tied to an opportunity. For a digital campaign, those touches are logged automatically. For an event, most of them happen in other tools:

Event touchWhere it lives without setupWhat the model sees
Pre-event outreach emailThe rep’s sequencerNothing, unless the sequence writes back to a campaign
Booked meeting at the eventA rep’s calendarNothing
Booth conversationA badge scan export, days laterA new Lead with no account and no history
Dinner or side eventA spreadsheet of RSVPsNothing
Post-event follow-upThe rep’s sequencerAn email activity with no event attached
One buyer, one event
Which event touches the CRM can count
  1. 3 weeks before, Replies to the meeting invite. Recorded in Sequencer. Default setup: not counted. Event campaign set up: counted.
  2. Day 1, Booth meeting. Recorded in Rep's calendar. Default setup: not counted. Event campaign set up: counted.
  3. Day 1, Booth conversation and note. Recorded in Scan export. Default setup: counted. Event campaign set up: counted.
  4. Day 2, Attends the dinner. Recorded in RSVP spreadsheet. Default setup: not counted. Event campaign set up: counted.
  5. Day after, Follow-up and next meeting. Recorded in Sequencer. Default setup: not counted. Event campaign set up: counted.
The same 5 touches, recorded 2 ways. With campaign members, activities and contact roles in place, every touch is available to the attribution model.

So the model credits the webinar from 9 months ago and the last email before the demo, and the event that put the buyer in a room with your team gets nothing. Event and RevOps leaders we interviewed describe the same 3 causes: the lead source is overwritten by a later tool, booth leads reach the CRM days after the event without an account, and the opportunity opens months later with nothing linking it back. The real cost of bad event attribution walks through what that does to the budget conversation.

Sourced and influenced pipeline

2 numbers answer 2 different questions, and finance needs both.

  • Sourced pipeline is the amount on opportunities the event created. One opportunity has at most one sourcing event.
  • Influenced pipeline is the amount on opportunities the event touched. One opportunity can be influenced by several events and campaigns.

The 2 totals will differ. Event attribution models defines sourced, influenced, accelerated and associated pipeline in full.

How each model splits credit for an event-heavy deal

The model you choose decides how much of a deal an event gets, even when every touch is recorded. Here is one opportunity with 6 recorded touches, 3 of them at an event.

Worked example
One opportunity, 6 touches, 5 models
One opportunity, 6 touches, 5 models
Model1. Paid search click2. Webinar sign-up, contact created3. Pre-event invite reply (event)4. Booth meeting (event)5. Event dinner (event)6. Discovery call, opportunity createdEvent touches
First touch100%0%0%0%0%0%0%
Last touch0%0%0%0%0%100%0%
Linear16.7%16.7%16.7%16.7%16.6%16.6%50%
U-shaped40%40%5%5%5%5%15%
W-shaped30%30%3.3%3.3%3.4%30%10%
Model rules follow the common definitions: U-shaped gives 40% each to the first touch and the lead-creation touch; W-shaped gives 30% each to the first touch, lead creation and opportunity creation. Shares are rounded.

The event gets nothing under first touch and last touch, 50% under linear, 15% under U-shaped and 10% under W-shaped. The 3 event touches sit in the middle of the cycle, and position-based models weight the ends.

That leads to 2 rules:

  1. Measure influence with a linear or even-distribution model. It credits every recorded touch, including the ones in the middle.
  2. Keep the sourced claim in its own field, set by rule. If the opportunity was created from a meeting booked at the event, the event sourced it, whatever the model says.

Multi-touch attribution for events in Salesforce: Campaign Influence

Salesforce attribution for events runs on 3 objects: the Campaign, the Campaign Member and the Opportunity, joined through contact roles.

  1. One Campaign per event, with a type and the actual cost, so cost per opportunity can be reported. Use child campaigns for a dinner or a sponsored session under the main event.
  2. Campaign Member statuses for the stage: invited, meeting booked, met at booth, attended dinner, followed up. The status holds only the latest stage, so keep each touch as an activity too: a Task for the booth note, an Event for the meeting.
  3. Match before you create. A booth scan for someone at an account with an open opportunity should attach to the existing Contact. Match on email first, then domain, then company name, and hold weak matches for review.
  4. Contact roles on the Opportunity. Customizable Campaign Influence links campaigns to opportunities by matching campaign members against the opportunity’s contact roles. If the buyer you met is not a contact role, the event gets no credit.
  5. Pick the influence models. The Primary Campaign Source model gives 100% to one campaign. First Touch, Last Touch and Even Distribution are additional models that need Account Engagement. A custom model takes percentages that you or a tool assign.
  6. Protect the original source. Lock the field that records where a lead first came from, so a later sequence or enrichment import does not overwrite the event.
  7. Separate fields for the claim. Add Opportunity fields for event-sourced and event-influenced pipeline. Influence models answer “what touched this deal”, and the sourced field answers “which event created it”.
Model names and requirements are from Salesforce’s Customizable Campaign Influence documentation. Check your edition before you plan on the additional models.

Salesforce event ROI tracking covers the campaign hierarchy and reports in more depth.

Multi-touch attribution for events in HubSpot: attribution reports

HubSpot attribution runs on interactions, contacts and deals, with the campaign as a reporting dimension.

  1. One HubSpot campaign per event. Associate the pre-event emails, sequences, meeting links, landing pages and lists to it.
  2. Record the event as a marketing event, with registrations and attendance. HubSpot counts event registration and attendance as interactions in its attribution reports.
  3. Log booth and dinner contacts against the campaign, with a property for how you met them. A conversation that never reaches HubSpot is invisible to every report.
  4. Associate contacts to deals. Attribution reports credit the interactions of contacts associated with the deal.
  5. Pick the model per question. For influence, use linear; U-shaped, W-shaped and time decay favor the ends or the most recent touches. Deal create and revenue attribution reports need Marketing Hub Enterprise; contact create reports work on Professional.
  6. Deal properties for sourced and influenced pipeline, so the event number sits in a standard deals report beside the rest of the quarter, on any edition.
Report types, models and edition requirements are from HubSpot’s knowledge base article on attribution reporting, read on October 22, 2026.

The guards that keep event attribution accurate

GuardRuleWhy
Attribution windowCredit touches within 90 days before the opportunityOlder touches inflate the claim
One sourced claimEach opportunity has at most one sourcing eventSourced totals never exceed total pipeline
Zero-dollar skipNo credit on opportunities without an amountThey inflate counts and break cost per opportunity
StalenessNo credit to deals with no activity for 6 monthsA deal with no activity inflates the pipeline figure
Free email domainsDo not match gmail.com or outlook.com to an account by domainOne personal address would credit the wrong company
Closed dealsNo new influence on deals already won or lostCredit has to come before the outcome
Match confidenceEmail match is high, domain medium, company name low; review the low onesA wrong match credits the wrong account

Report it on a schedule finance can follow

Event pipeline arrives late. Opportunities from a September event can open in November and close the next spring, so one report a week after the event undercounts it.

Checklist
The event attribution reporting cadence
  • Day 2: every touch on the campaignPeople matched to accounts, owners assigned, follow-up sent.
  • Day 30: opportunities createdSourced count and amount, first read of influenced.
  • Day 90: sourced and influenced pipelineThe number for the QBR, with cost per opportunity.
  • Day 180: closed-won and next-year decisionReturn, change format or drop.

The post-event report template turns those reads into one page.

How Luminik writes event attribution

Luminik does this setup for every event, on the day each touch happens:

TouchSalesforceHubSpot
Person touched at the eventCampaign Member with the latest statusTimeline event on the Contact for each touch
Booth note or voice noteTask on the Lead or ContactEngagement (Note) on the Contact and Deal
Booked meetingEvent, linked to the OpportunityEngagement (Meeting), associated to the Deal
Event pipelineOpportunity fields you chooseDeal properties you choose
  • Matching: each person is matched to the existing account by email, domain or company name, with high, medium or low confidence and a manual override.
  • Attribution: sourced, influenced, accelerated and associated pipeline are written within 48 hours from event end, with the guards above applied.

See post-event attribution and ROI, and the Salesforce and HubSpot integration pages for the objects Luminik writes.

Event attribution FAQ

How do you track event attribution in Salesforce?

Create one Salesforce Campaign per event, add every person you touched as a Campaign Member with a status such as invited, met at booth or attended dinner, and add the people you met to Opportunities as contact roles. Campaign Influence then credits the event on each Opportunity it touched, using the model you turn on. Write sourced and influenced pipeline to separate Opportunity fields so the event number is reportable.

How do you track event attribution in HubSpot?

Create a HubSpot campaign per event, record the event as a marketing event with registrations and attendance, associate the emails, meetings and lists for that event, and log booth contacts against it. HubSpot's attribution reports then credit the interactions on contacts associated with each deal. Deal create and revenue attribution reports need Marketing Hub Enterprise.

Which attribution model is best for events?

Use a linear or even-distribution model to measure influence, because it credits every recorded touch, including event touches in the middle of a cycle. Keep a separate sourced field for the event that created the opportunity. First-touch and last-touch models give events no credit unless the event happened to be the first or last touch.

What is the difference between sourced and influenced pipeline?

Sourced pipeline is the amount on opportunities an event created. Influenced pipeline is the amount on opportunities an event touched after they existed, or that it helped create alongside other touches. One opportunity has at most one sourcing event but can be influenced by several.

Prasad Subrahmanya avatar
About the author
Prasad Subrahmanya
Founder & CEO, Luminik

Founder of Luminik. Previously Venture CTO at Bain & Company and cofounder at Mainteny. Writes about how mid-market B2B teams build predictable pipeline from events.

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