Two fundamentally different types of intent signal
Before evaluating tools, understand that "intent data" refers to two structurally different signal types:
Account-level content intent
A company (not an individual) is consuming content related to your category on third-party B2B publisher sites. Inferred from anonymous browsing data pooled across thousands of publishers. 6sense, Bombora, and ZoomInfo Intent work this way.
Individual conversation intent
A named individual is publicly posting about a problem your product solves — on Reddit, Quora, LinkedIn, Twitter, or a forum. Direct, explicit, attributed to a specific person. MentionFox works this way.
The right tool depends on which signal type fits your sales motion. Account-level intent is powerful for large ABM programs targeting named accounts. Individual conversation intent is more actionable for sales cycles where you can reach the specific person who expressed a pain point.
The tools
1ZoomInfo (with Intent)
Strength: ZoomInfo is the largest B2B contact database available, and its Intent add-on layers account-level buying signals (companies surging on relevant topics) onto that contact data. The practical workflow: Intent surfaces Company X as actively researching your category, then ZoomInfo gives you the VP of Sales's direct email in the same interface. For high-volume SDR teams targeting large companies, this combination reduces research time significantly. Data accuracy for large enterprise contacts is high.
Watch-out: Expensive. Intent data is account-level, not individual — you still need to figure out which person at Company X to reach. Data accuracy drops for smaller companies and non-US markets. Annual contracts with significant minimums. The intent signal is inferred from anonymous content consumption, not explicit expression of need.
26sense
Strength: 6sense is the most comprehensive intent-driven revenue platform available. It combines third-party intent data (including Bombora), first-party engagement tracking, predictive AI scoring, account prioritization, and orchestration workflows that push high-intent accounts into CRM, marketing automation, and ad targeting simultaneously. For mature revenue operations teams with clean data infrastructure, 6sense can meaningfully improve pipeline velocity and conversion rates.
Watch-out: Enterprise pricing and complexity. Requires significant time investment for initial setup, CRM integration, and model training. ROI is difficult to prove quickly. Not appropriate for teams without a dedicated RevOps or marketing operations resource to manage the platform. Also: 6sense intent signals are probabilistic (they predict which accounts are in-market based on content signals), not deterministic — they can be wrong.
3Bombora
Strength: Bombora is the source many other intent platforms (including 6sense) pull from. Its B2B Intent data cooperative covers 5,000+ publisher sites and measures company-level topic surges with strong coverage of technology buying topics. If you already have a CRM or sales engagement platform and want to layer intent data on top without switching your primary tool, Bombora's direct integrations (Salesforce, HubSpot, Marketo, Outreach, etc.) make it the cleanest path. Price is generally lower than 6sense for the data-only use case.
Watch-out: Bombora is data, not a workflow tool. You need an existing platform to activate it in (your CRM, ABM tool, or ad platform). If you do not have that infrastructure, Bombora alone does not provide much.
4Outreach / Salesloft (for context)
Strength: Outreach and Salesloft are where you act on intent signals — running sequences, managing call tasks, and tracking engagement. Both integrate with ZoomInfo, 6sense, and Bombora to prioritize sequences based on account intent. They are not intent data sources.
Watch-out: Enterprise pricing. Assume SDR headcount to justify. For bootstrapped founders or small sales teams, the overhead is disproportionate.
5MentionFox
Strength: MentionFox is the only tool in this list designed to surface individual-level explicit conversation intent. When someone posts on Reddit "I'm evaluating alternatives to [Competitor X] — what are people using?" or on Quora "What's the best tool for [use case you solve]?" — MentionFox finds that post, identifies the author, enriches their contact info, and helps draft a reply grounded in what they actually wrote. For B2B SaaS products sold to founders, developers, marketers, and small teams who post publicly about their problems, this is often the highest-converting intent signal available. Conversion is higher because timing is exact and the opening is contextual. No auto-send: all outreach requires manual review and approval.
Watch-out: MentionFox is not an account-level intent tool. It does not tell you which companies are in-market based on content consumption signals — it finds individuals already expressing a specific need. For enterprise sales cycles targeting named accounts, ZoomInfo or 6sense will reach more of your target accounts. For SMB or self-serve SaaS where buyers post openly about their needs, MentionFox is often more actionable.
Intent tool comparison by signal type and use case
| Tool | Signal type | Individual-level | Account-level | Contact included | Outreach built-in |
|---|---|---|---|---|---|
| ZoomInfo Intent | Content consumption | No | Yes | Yes | Via sequences |
| 6sense | Content + predictive | No | Yes | Needs CRM | Via integrations |
| Bombora | Content consumption | No | Yes | No | No |
| MentionFox | Social conversation | Yes | Partially | Yes (enriched) | Yes (human approval) |
Find prospects actively expressing a problem you solve
MentionFox scans 55+ platforms for people asking questions, complaining about competitors, or seeking recommendations in your category. Free plan available.
See plans and pricingQuestions, answered
What's the best buying-intent signal tool for B2B SaaS sales teams?
The answer depends on which intent signals matter most for your ICP. For account-level intent (companies researching your category on third-party sites), 6sense and Bombora are the gold standard. For individual-level social conversation intent (finding people actively posting about a problem you solve), MentionFox is purpose-built. ZoomInfo Intent combines database enrichment with intent signals at scale.
What is the difference between 6sense and Bombora for B2B intent data?
Bombora is a data cooperative that aggregates content consumption signals from 5,000+ B2B publisher sites and measures which companies are surging on topics relevant to your product. 6sense is a full demand generation platform that includes intent data (partly from Bombora, partly proprietary) combined with predictive scoring and orchestration workflows.
Is ZoomInfo intent data worth the premium?
Worth the premium if your team runs high-volume outbound and needs to prioritize accounts by in-market readiness. Combined with ZoomInfo's contact data, it creates a workflow where you can find surging companies and immediately pull contact info for decision-makers. Less value if your deal sizes are small or your ICP does not heavily consume B2B content.
What is the cheapest source of genuine B2B buying intent signals?
The cheapest genuine intent signal is a public post: someone on Reddit, Quora, LinkedIn, or Twitter expressing a problem your product solves, asking for a recommendation, or complaining about a competitor. These posts are free to find with the right monitoring tool — the intent signal is explicit, not inferred. MentionFox is designed to surface exactly these posts across 55+ platforms.
Can I use social conversation monitoring as an intent data source?
Yes, and for many B2B SaaS teams it is the most actionable intent signal available. A forum post where someone says "I'm evaluating alternatives to Competitor X" is more direct intent than an anonymous account-level signal that "Company Y has been researching this category." Social conversation monitoring surfaces the individual, the specific pain point, and the timing — all in one place.