Selling to everyone means selling to no one. The most effective B2B sales teams build vertical-specific outreach that speaks directly to an industry's pain points, language, regulations, and priorities — and Apollo.io's industry filters make building those targeted lists faster than ever. Whether you're going after SaaS companies, healthcare providers, financial services firms, or manufacturing businesses, Apollo gives you the tools to carve out exactly the vertical you want and find the right contacts within it.
Why Industry Filtering Is the Foundation of Vertical Sales
Every industry has its own vocabulary, priorities, compliance requirements, and buying behaviors. A generic pitch that ignores these realities gets deleted immediately. Industry filtering in Apollo lets you build lists where every contact shares the same business context, making personalization dramatically more effective.
- Industry-specific messaging outperforms generic pitches by a wide margin in reply rates
- Vertical focus allows you to build case studies and social proof that resonates
- Industry filters in Apollo return companies using the same SIC/NAICS classifications your CRM likely uses
- You can build entire outbound strategies around a single vertical and dominate it
Step 1: Access Industry Filters in Apollo
Industry filters are available in both the People and Companies search sections.
- Go to Search > People or Search > Companies
- In the filter panel on the left, scroll to Industry
- Click to expand the industry filter options
- You'll see a searchable list of industry categories and subcategories
Apollo uses a broad industry taxonomy that includes hundreds of categories. Some top-level examples:
- Technology / Software / SaaS
- Financial Services / Banking / Insurance
- Healthcare / Medical Devices / Pharmaceuticals
- Manufacturing / Industrial / Logistics
- Retail / E-commerce / Consumer Goods
- Real Estate / Construction / Property Management
- Education / EdTech / Higher Education
- Professional Services / Consulting / Legal
Step 2: Select Single or Multiple Industries
You can filter for one specific industry or combine multiple related verticals into a single search.
- Click the checkbox next to each industry you want to include
- Apollo allows multi-select, so you can combine related verticals
- Results update in real time as you add or remove industries
Example multi-industry combinations:
- For a cybersecurity platform: Financial Services + Healthcare + Government (all highly regulated)
- For an HR SaaS: Technology + Professional Services + Retail (high employee churn industries)
- For a logistics tool: Manufacturing + E-commerce + Wholesale Distribution
Step 3: Use Sub-Industry Filters for Deeper Targeting
Inside Apollo's industry categories, many have sub-classifications that let you drill further down.
- Within "Technology," you can filter for SaaS, Hardware, IT Services, Semiconductors, etc.
- Within "Healthcare," you can target Hospitals, Clinics, Biotech, Pharma, Medical Devices
- Within "Financial Services," you can separate Banking, Insurance, Investment Management, Fintech
Sub-industry targeting is essential when your solution has a very specific use case that only fits a particular slice of a broad industry. Don't target all of "Healthcare" when you really only serve hospital systems with 200+ beds, for example.
Step 4: Combine Industry with Other Filters
Industry alone gives you a wide net. Combining it with other filters is where the magic happens.
Industry + Job Title:
- Industry: SaaS / Software
- Job Title: VP of Engineering, CTO, Head of Infrastructure
- Result: Technical decision makers at software companies
Industry + Company Size:
- Industry: Financial Services
- Employees: 500–5,000
- Result: Mid-market to enterprise financial firms with real tech budgets
Industry + Geography:
- Industry: Manufacturing
- Location: Germany, Netherlands, Belgium (DACH + Benelux)
- Result: European manufacturers for a region-specific campaign
Industry + Technology:
- Industry: E-commerce
- Technologies Used: Shopify, Klaviyo, or WooCommerce
- Result: Online retailers using your integration partner's stack
As your team scales across verticals and geographies, operational tools become critical. Deel helps companies like yours hire and manage global teams compliantly, so your sales and customer success teams can operate in any region without legal complexity. Check out Deel's global hiring platform.
Step 5: Use the NAICS / SIC Code Approach for Precision
For some verticals, Apollo's broad industry labels aren't specific enough. In those cases, you can search by keyword within the industry filter or use company keyword searches to get more precise.
- Type specific keywords in the company search (e.g., "logistics provider," "managed service provider," "law firm")
- Use the Keywords filter in company search for more granular industry signals
- Cross-reference with employee count and geography to narrow results
This approach is especially useful for niche industries that don't appear as standalone categories in Apollo's taxonomy, like cannabis, specialty agriculture, defense contracting, or proptech.
Step 6: Save Industry-Specific Searches as Templates
Once you've built a strong industry filter stack, save it for recurring use.
- Click Save Search at the top of the results
- Name it by vertical: "US FinTech Startups 50-200 Employees" or "EU Manufacturing Directors"
- Enable alerts so you're notified when new companies or contacts matching the industry criteria appear
- Build one saved search per vertical you're actively pursuing
This creates a library of industry-specific prospecting lists that your entire team can reference and pull from without rebuilding from scratch each time.
Step 7: Build Industry-Specific Email Sequences
Filtering by industry is only half the equation. The other half is messaging that feels native to that industry.
Apollo's sequence builder lets you create industry-specific templates.
- Go to Engage > Sequences
- Create a new sequence named after the vertical (e.g., "Healthcare Outbound Q3")
- Write email templates that reference industry-specific pain points:
- For Healthcare: compliance burden, patient data security, staff retention
- For FinTech: regulatory change, fraud prevention, real-time payment processing
- For Manufacturing: supply chain visibility, downtime costs, workforce management
Industry-specific personalization elements:
- Reference recent news or regulation changes in their industry
- Use industry terminology naturally (not forced jargon)
- Mention relevant competitors or adjacent players they'd recognize
- Cite industry-specific statistics in your cold email openers
Step 8: Track Performance by Industry
Once you've launched industry-specific campaigns, track performance separately so you can see which verticals respond best to your outreach.
- In Engage > Analytics, filter by sequence name (using your vertical-named sequences)
- Compare open rates, reply rates, and meeting booking rates across industries
- Double down on the verticals with the highest response rates
- Investigate low-performing verticals: Is it the industry fit, the messaging, or the targeting?
Benchmark expectations by industry:
- SaaS/Tech: Higher open rates (tech-savvy buyers, short attention spans)
- Healthcare: Lower open rates but higher intent when they do engage (busy buyers, high trust requirements)
- Financial Services: Medium open rates, strong preference for compliance and security messaging
- Manufacturing: Lower digital engagement overall, phone follow-up often essential
Common Mistakes When Filtering by Industry
- Too broad — "Technology" is 30% of the Apollo database; narrow to a sub-vertical
- Mismatched ICP — targeting an industry where your product isn't a natural fit just because it's large
- Generic messaging — using the same sequence across industries defeats the purpose of vertical targeting
- Ignoring compliance — some industries (healthcare, finance) have strict email compliance requirements; know them
- Not reviewing industry data for accuracy — Apollo's industry classifications come from company self-reporting and data vendors; occasionally a company is miscategorized
Final Thoughts
Filtering leads by industry in Apollo.io is the gateway to vertical selling — one of the highest-leverage strategies in B2B sales. It lets you build lists where every contact shares the same business context, enabling messaging that feels like it was written just for them. Stack industry filters with company size, geography, and job title, save your searches, and build sequences that speak the language of each vertical. Your reply rates will reflect the precision.