Sources
Where we build from.
Ten sources, picked per brief, so you get the list without carrying ten subscriptions whose credits you would never use up. Each one is good at something. None of them is good at everything, which is why a list is built from several.
What each one is for.
Apollo
Title, seniority and company filters at scale. Its email status is a starting point, never the final word.
LinkedIn Sales Navigator
Current titles, headcount and geography that hold, plus the Premium and activity filters that lift reply rates.
Google Maps
Local and clinic-style businesses: dental, medical, trades, hospitality. Address, phone, hours and reviews straight from the listing.
ZoomInfo
Larger organisations: org charts, direct lines and firmographics where the target is enterprise.
Crunchbase
Funding stage, founders and investors. The source for startup and scale-up briefs.
Lusha
Contact reveal for a named person, with its own confidence flag on mobiles.
Prospeo
Bulk email finding and verification, and mobile enrichment by profile, run after qualification.
Clay
Enrichment waterfalls and website reads, so each field is tried across providers in order until one confirms.
- P
Public registries
Licence registers, company houses, trade bodies and filings. Where a target is listed by obligation, this is the first source, because it is complete.
- C
Company websites
Read for every company on every list. The qualification itself: what the company does, who it serves, whether it still does it.
Platform names and logos belong to their owners and are shown to explain where lists are built from. Proxpectra is not affiliated with, endorsed by or a reseller of any of them.
Why several
The source is chosen per target, not per habit.
A UK dental list
starts in the professional register, is matched to practice websites, then enriched through two providers and verified.
A US SaaS founders list
starts in Crunchbase for stage and funding, is filtered in Apollo for titles, and verified before delivery.
A Dubai clinic list
starts in the health authority's licence register, is qualified on each clinic's website, then enriched for the medical director's email and number.
Responsible research
How we work with these sources.
Five rules that apply to every list, whatever the brief.
- 1
Public business data only
Company names, work titles, work emails and business numbers, from platforms we are licensed to use and sources that publish it. No personal addresses, no private accounts.
- 2
Built on request, never stored
Each list is built for one client from their brief. We hold no database of leads to resell. Working files are deleted 30 days after delivery.
- 3
No shared logins, no browser tricks
We run searches on seats we hold, through the platforms' own interfaces and APIs. We do not run extensions under a client's account or read a session cookie.
- 4
Opt-out, honoured
Anyone who asks to be removed stays out of every future build. Write to the address on the contact page. We can also point you to the source platforms to remove your profile at the root.
- 5
You are the sender
We never send on a client's behalf. The client decides who is contacted and how, under the rules for their market, and we say which rules apply in every delivery note.
Tell us the target. We pick the source.
A brief or a search URL is enough. Count and quote the same day.