How to use a call list to source candidates

You've emailed. You've sent the LinkedIn InMail. Nothing. Now you're staring at a list of candidates you actually want and deciding whether to pick up the phone. Most recruiters either skip the call entirely or dial cold without any preparation, burning a touchpoint that could have moved the conversation forward.

The data makes a compelling case for calling. According to Cognism's State of Cold Calling 2026, which analyzed more than 200,000 calls, the average cold call success rate climbed to 2.7% in 2026, up from 2.39% in 2025. Top performers hit 11% or higher by combining verified phone data, tight scripts, and Tuesday through Thursday calling windows. And according to Gem's 2025 sourcing benchmarks, sourced candidates are 8x more likely to be hired than inbound applicants. The call is worth making. The question is whether you make it well.

This article walks through how to use a call list to source candidates effectively: building and segmenting a list, executing calls with ZoomInfo Engage, fitting the call into a multi-channel outreach sequence, and tracking the KPIs that tell you whether your sourcing calls are actually working.

What is a recruiting call list (and how it differs from a candidate source list)

These two terms get conflated often enough that it's worth separating them before going further. A candidate source list is a tracking taxonomy: it records where candidates originated, whether that's a job board, a referral, LinkedIn, a university program, or an agency. It's a reporting tool that helps talent acquisition leaders measure channel performance over time. It tells you which sources produce hires, not which candidates to call next Tuesday.

A candidate sourcing call list is something different. It's an actionable outreach queue: a specific set of candidates you plan to dial, typically built from your ATS or sourcing database and worked within a defined time window. Where a source list answers "where did this candidate come from?", a call list answers "who am I calling today and why?"

Understanding that distinction also clarifies the two primary types of call lists recruiters use, adapted from standard staffing frameworks. The first is a role-fill call list: outreach to candidates about a specific open position. The approach here is candidate-centric, focused on matching the person to a role and gauging their interest. The second is a candidate marketing call list: outreach to hiring managers or clients about a specific candidate you've already identified as strong. The approach flips, with the conversation centered on selling the candidate's profile rather than the role. ZoomInfo TalentOS supports both workflows, letting you pull from the same verified database whether you're filling a role or marketing a candidate.

How to build and segment your candidate call list

Building a call list that produces results isn't a data export problem. It's a workflow problem. Here's how to do it in a way that produces a focused, tiered list you can actually work.

Step 1: Define the role ICP and must-have criteria

Before you pull a single name, get clear on who you're actually looking for. Define the role's must-have criteria: specific skills, years of experience, industry background, and any hard requirements like certifications or location. A useful filter borrowed from talent acquisition practice is the 70/30 rule: hire candidates who meet 70% of the stated requirements, since the remaining 30% can typically be learned on the job. Applying this filter at the list-building stage prevents you from excluding strong passive candidates who don't perfectly match the job description, while keeping the list from becoming unfocused.

Step 2: Pull candidates from ZoomInfo TalentOS using search filters

With your criteria defined, use ZoomInfo TalentOS's search filters to build your initial candidate pool. The data foundation here matters: ZoomInfo's database includes 135M+ verified phone numbers and 200M+ verified business emails, continuously refreshed through multi-source verification. That scale means you're not just finding candidates who match the role criteria, you're finding ones with contact information that will actually connect.

Step 3: Segment and tier the list

A raw export of 200 candidates is not a call list. It's a pile. Segment it into tiers before you touch the phone. Tier 1 covers candidates with strong fit plus recent activity signals, such as an "Open to Work" status or a recent job change. These are your highest-probability connects and should get your best preparation and earliest call slots. Tier 2 is strong fit but passive, with no recent signals. They're worth calling but require a more patient approach. Tier 3 is partial fit or speculative outreach, candidates you're calling because the role is hard to fill or the profile is interesting enough to explore.

The active versus passive distinction is the primary segmentation axis here. Passive candidates represent the majority of the talent market and often include the most sought-after professionals precisely because they aren't actively looking. Your call approach for a passive Tier 2 candidate needs to be meaningfully different from a Tier 1 candidate who just updated their LinkedIn profile.

Step 4: Add candidates to ZoomInfo Engage

Once your list is tiered, add candidates to ZoomInfo Engage using the "Add As Contact" workflow: select candidates in TalentOS, choose "Add As Contact" from the Engage dropdown, and they flow directly into your Engage contacts. This step eliminates the multi-tool context-switching problem that kills recruiter productivity. Instead of exporting to a spreadsheet, importing to a sequencing tool, and manually reconciling contact records across platforms, your candidates are in one place with their verified contact data intact.

Warming up your call: A LinkedIn profile view and a brief email before dialing significantly increases response likelihood. Treat the call as the third touchpoint, not the first. ZoomInfo Engage's sequence capabilities automate this multi-touch flow so the warm-up happens consistently, not just when you remember to do it.

Step 5: Assign call owners and set daily dial targets

Assign each segment of the list to a specific recruiter and set daily dial targets before the call block starts. A well-segmented list has no more than 50 candidates per recruiter per week to maintain call quality. Lists larger than this tend to produce rushed dials, lower candidate experience, and declining connect rates as preparation time per candidate shrinks. Set the daily target, block the time, and work Tier 1 first.

Executing calls with ZoomInfo Engage: scripts and timing

When you use a call list to source candidates effectively, the mechanics of execution matter as much as the list itself. Here's how to launch, what to say, and when to dial.

How to launch your call list in Engage

Once your candidates are in Engage, navigate to the Contacts tab and select the candidates you want to call in this session. Use the blue Engage dropdown and select Call. Engage auto-dials through the list, eliminating the manual dialing friction that causes recruiters to lose momentum mid-session.

ZoomInfo is an all-in-one AI GTM Platform, and for recruiting teams, that means verified contact data, engagement sequencing, and call automation in one place, not three.

Call scripts for passive vs. active candidates

Scripts aren't a crutch. They're a preparation tool that reduces hesitation on the first dial and keeps the conversation on track when a candidate throws an unexpected objection. Here are two templates to adapt.

Script A: Cold call to a passive candidate sourced from the database

• Opener: "Hi [Name], this is [Your Name] from [Company]. I'm reaching out because your background in [specific skill or role] caught my attention for something I'm working on. Do you have 90 seconds?"

• Value prop: "I'm recruiting for a [role title] at [Company/Client]. Based on your experience at [their current company], I think there could be a strong fit. I'm not asking you to make any decisions today, I just want to share what the opportunity looks like."

• Ask: "Would you be open to a 15-minute call this week to hear more?"

• Objection handler: "Totally understand if the timing isn't right. Can I send you a brief overview by email so you have it if anything changes?"

• Close: "Great. I'll send that over today. And if you know anyone else who might be a fit, I'd love an introduction."

Script B: Warm follow-up call after a LinkedIn view and email touchpoint

• Opener: "Hi [Name], I sent you a note on LinkedIn and a quick email earlier this week about a [role title] opportunity. I wanted to follow up directly, do you have a minute?"

• Bridge: "I know you're probably getting a lot of outreach. I reached out specifically because [one specific reason tied to their background]."

• Ask: "Would a quick call this week make sense to see if it's worth exploring?"

When to call: timing that improves connect rates

Tuesday through Thursday are the highest-yield days for recruiter cold calls, per Cognism's 2026 analysis of 200,000+ calls. Within those days, 8 to 9 AM and 4 to 5 PM local time for the candidate produce the best connect rates, according to HubSpot benchmarks. Block your Engage call sessions for Tuesday through Thursday mornings to maximize connect rates. Avoid Monday mornings and Friday afternoons, candidates are either catching up from the weekend or already mentally checked out for it.

Fitting the call into a multi-channel candidate outreach sequence

The scenario this article opened with is exactly right: email went unanswered, LinkedIn InMail got no response, and now the call is the third touchpoint. That's the correct instinct. Calling a candidate cold with no prior contact wastes the touchpoint. Calling after two prior touches, where the candidate has at least seen your name, meaningfully improves your odds of a real conversation.

ZoomInfo Engage is built to automate exactly this multi-touch flow. Here's a concrete six-touchpoint sequence with recommended spacing:

1. LinkedIn profile view (Day 1), signals interest before any direct contact

2. Personalized email (Day 2), introduce the role and company; keep it to three sentences

3. Call via Engage call list (Day 4), the primary outreach attempt

4. Voicemail + LinkedIn connection request (Day 4, same day as call), leave a voicemail referencing the email, then send the connection request

5. LinkedIn message referencing the email and call (Day 7), brief, references prior contact, includes a clear ask

6. Final follow-up email with a clear opt-out (Day 10), gives the candidate a graceful exit and closes the loop

Engage's sequence builder automates steps 2 through 6, so the cadence runs consistently without requiring the recruiter to manually track where each candidate is in the sequence. GTM Workspace, the broader recruiter and seller workspace that houses Engage's sequencing capabilities, means your verified contact data powers every touchpoint in the sequence without requiring platform switches between steps.

A note on compliance: Before dialing any mobile numbers, cross-reference your call list against the National Do Not Call Registry. TCPA (Telephone Consumer Protection Act) consent requirements apply to calls made to mobile numbers using automated dialing technology. Recruiters using automated calling sequences should confirm that their outreach practices align with TCPA guidelines for their specific use case, particularly when contacting candidates who have not previously opted in. This is especially relevant for high-volume call blocks. When in doubt, consult your legal team before running automated mobile outreach at scale.

Call list KPIs: how to measure whether your sourcing calls are working

Call list sourcing candidates produces a measurable funnel, and tracking it tells you whether your list quality, scripts, and timing are actually working or just generating activity. Here are the six KPIs that matter, with benchmarks and how ZoomInfo Engage surfaces them.

Engage's reporting surfaces connect rates and sequence performance natively, eliminating the need for manual tracking spreadsheets. If your connect rate falls below 8%, the first variable to check is data quality: are the phone numbers on your list verified direct dials or mobile numbers pulled from a stale export?

Why verified phone data is the foundation of every effective call list

Most call list failures aren't execution problems. They're data problems that show up as execution problems.

Reps call exported numbers and reach retired employees, family members, or people who have no connection to the candidate they were trying to reach. Email bounces from stale contact data erode sender domain reputation, limiting the volume of outreach you can run before deliverability degrades. Contacts who changed jobs create a hidden failure rate that only surfaces when outreach attempts fail at scale, with no flag in the system to indicate the record is stale. These are the silent killers of call list ROI, and they compound: a list built on bad data produces low connect rates, which produces low screen rates, which produces low submissions, which produces the conclusion that "calling doesn't work" when the actual problem was the data.

ZoomInfo addresses this at the data layer. The database includes 135M+ verified phone numbers, 120M+ direct-dial phone numbers, and 200M+ verified business emails, with multi-source verification backed by 300+ human researchers. The distinction between verified phone numbers and direct-dial numbers matters for call list work specifically: direct dials bypass the main company switchboard and reach the candidate's desk or mobile directly, which is the difference between a connect and a voicemail-to-nowhere. ZoomInfo's data is continuously refreshed, so the call list a recruiter builds today reflects current contact information rather than records that decayed six months ago.

One counterintuitive data point worth noting: cold call success rates are not declining. The 2026 rate of 2.7% is actually higher than the 2025 rate of 2.39%, per Cognism's analysis of 200,000+ calls. The likely explanation is that recruiters who invest in verified data and tight execution are outperforming the field as lower-quality callers drop out. The floor is rising for those who do it right.

ZoomInfo is an all-in-one AI GTM Platform that gives recruiting teams the data layer to make every call list dial count.

See how ZoomInfo's verified contact data powers faster candidate sourcing.

Frequently asked questions

How do I export candidates from ZoomInfo TalentOS to a call list in Engage?

Select the candidates you want to call in ZoomInfo TalentOS, then choose "Add As Contact" from the ZoomInfo Engage dropdown. Log into Engage, navigate to the Contacts tab, select the candidates you exported, and use the blue Engage dropdown to initiate the call sequence. The workflow takes under two minutes and eliminates manual list-building between platforms.

What is the difference between a candidate source list and a call list?

A candidate source list is a tracking taxonomy that records where candidates originated, job boards, referrals, LinkedIn, and similar channels. It's a reporting tool, not an outreach queue. A candidate sourcing call list is an actionable set of specific candidates you plan to dial, typically built from your ATS or sourcing database and worked within a defined time window. Source lists measure channel performance; call lists drive outreach activity.

What are the best days and times to call candidates?

Tuesday through Thursday are the highest-yield days for recruiter cold calls, per Cognism's 2026 analysis of 200,000+ calls. Within those days, 8 to 9 AM and 4 to 5 PM local time for the candidate produce the best connect rates, according to HubSpot benchmarks. Block your ZoomInfo Engage call sessions for these windows to maximize the return on each dial.

How many candidates should be on a recruiting call list?

A well-segmented call list has no more than 50 candidates per recruiter per week to maintain call quality and avoid burnout. Lists larger than this tend to become unfocused, with recruiters rushing through dials without adequate preparation, which reduces connect rates and candidate experience. Tier your list by fit and urgency: Tier 1 for strong fit with recent activity signals, Tier 2 for strong fit and passive, Tier 3 for speculative outreach. Work Tier 1 first.

Does ZoomInfo Engage support automated calling sequences for candidate outreach?

Yes. ZoomInfo Engage allows recruiters to select a list of candidates and initiate automated sequential calling directly from the Contacts tab using the Engage dropdown. Engage also supports multi-touch sequences combining calls, emails, and LinkedIn touchpoints in a single automated cadence, so recruiters can run a full outreach sequence without switching between tools.