What is a B2B SaaS leads database?

A B2B SaaS leads database is a searchable collection of verified software-as-a-service companies with contact information, firmographic data, and technology signals. port587's database contains over 100,000 verified B2B SaaS companies that can be filtered by industry, geography, company size, revenue, and funding stage.

How much does the port587 leads database cost?

port587 uses pay-per-lead pricing with no subscriptions. Credits start at $49 for 1,000 leads (~$0.049/lead) and go down to ~$0.02/lead at agency volume (50,000+). Credits never expire, and you only pay when you export contact data.

Where does the data come from?

Leads are sourced from publicly available business directories, LinkedIn, and verified B2B data providers. All data is regularly cleaned, deduplicated, and validated through automated email verification and website enrichment.

How is port587 different from Apollo or ZoomInfo?

port587 is a pure data layer, not an all-in-one platform. You pay only for the leads you export (no seat-based subscriptions), use your own outbound tools, and own your data in CSV or JSON format. Unlike Apollo and ZoomInfo, there are no forced bundles of sequencing, CRM, or calling features.

No. Credits never expire. You buy them once and use them whenever you need to export leads.

Yes. You can create an API key from your dashboard and integrate lead search directly into your tools and workflows via the REST API.

What formats can I export?

Leads can be exported as CSV or JSON, ready for import into any CRM, enrichment tool, or spreadsheet.

Where can I get a SaaS company email list?

port587 provides a verified database of B2B SaaS companies with founder and decision-maker emails. Filter by company size, category, geography, and revenue range, then export as CSV or JSON. Emails include validation status (VALID, RISKY, INVALID) so you can maintain deliverability.

Are SaaS founder email lists accurate?

Accuracy depends on the source and freshness. port587 validates emails continuously and marks each with a validation status. We recommend filtering for VALID-only emails to maximise deliverability and protect your sending domain.

SaaS Company Email List — Find Verified SaaS Founder Emails

What you get

Each exported lead includes:

Company data - name, domain, category, size, revenue, geography, tech stack.
Contact data - full name, title, work email, phone, LinkedIn.
Email validation - VALID, RISKY, INVALID, or UNKNOWN status per email.

How to build your list

Go to the port587 database and set your ICP filters.
Enable "Only valid emails" to filter for verified addresses.
Narrow by founder/executive titles if targeting specific roles.
Export as CSV or JSON.
Import into your cold email tool.

Why email validation matters

Sending to unvalidated email lists destroys your domain reputation:

High bounce rates → email providers flag your domain.
Spam complaints → your deliverability drops across all campaigns.
Wasted volume → you burn through sending limits on dead addresses.

port587 validates every email and provides a status flag so you can filter for VALID-only exports. This protects your sending infrastructure.

SaaS-specific vs generic email lists

Generic B2B email lists - include every industry. Only 10-20% are SaaS companies. Emails often unverified.
SaaS-specific email lists (port587) - every record is a SaaS company. Emails validated. SaaS-specific filters available.

For cold email, list quality > list size. A 500-lead list with 95% valid emails at SaaS companies outperforms a 5,000-lead generic list with 60% validity.

Get started

Create a free port587 account to start building your SaaS company email list.