Identity resolution / Anonymous visitor identification

Resolve 50–60% of anonymous visitors to a postal identity.

A pixel resolves anonymous visitors to name + verified postal address + email + phone + ~70 demographic fields. CCPA-compliant by default. Three packaging options: run mail + email + SMS + Meta on DirectMail.io, push to a web-to-print workflow, or push to your CRM. Comparable to Customers.ai, Warmly, LettrLabs LeadReveal, Tie, and RB2B at the resolution layer — different at the activation layer.

Comparable to

When teams compare Identity Resolution Platform options.

When a buyer compares identity resolution platforms, the typical alternatives below all run a similar pixel. DirectMail.io's distinction is the postal-identity-first resolution and integrated direct mail activation — the only platform of the group that routes resolved records directly into the press queue with variable imaging.

  • LettrLabs (LeadReveal)

    Direct mail platform with their own identity resolution pixel. Closest functional overlap.

  • Customers.ai

    X-Ray pixel for DTC e-commerce. Email-first activation through Klaviyo + Meta.

  • Warmly

    B2B-focused visitor identification with sales workflow integrations.

  • Tie (formerly Revenue Roll)

    Visitor identification with strong USA shopper match rates. E-commerce focus.

  • Opensend

    Mid-market visitor identification with email-first activation.

  • RB2B

    B2B person-level visitor identification, free up to a volume cap.

Capabilities

The identity resolution stack.

Six layers, all running on a CCPA-compliant identity graph, all packaged into the integrated DirectMail.io platform.

  • Postal identity resolution (50–60% match rate)

    A lightweight JavaScript pixel installs on the brand site. Hashed signals collect on visits and match against a CCPA-compliant identity graph. Typical match rates land 50–60% on US consumer traffic. Resolved records include name, postal address, email, phone, and around 70 demographic fields.

  • CCPA / CPRA compliance + GPC handling

    CCPA-compliant resolution by default with consumer right-to-delete on every resolved record. GPC (Global Privacy Control) browser signals honored automatically. Cross-session opt-out propagation: an opt-out registered anonymously persists when the same identity later authenticates.

  • Direct mail activation on resolved visitors

    Resolved identities flow directly into the campaign engine. Trigger personalized direct mail with variable imaging (Google Street View, vehicle, neighborhood, abandoned cart product) within 24-48 hours. Per-piece IV-MTR tracking ties the mail back to the originating visit.

  • Three packaging options

    Run mail + email + SMS + Meta on DirectMail.io directly. Push resolved data into a connected web-to-print workflow (your printer or ours). Or push into your CRM, marketing automation, ad platforms, or BI stack via API/webhooks/SFTP for activation on your own stack.

  • Per-source resolution rate reporting

    The dashboard reports actual match rate per traffic source (paid social, organic, direct, referral) so the team can see real production numbers, not category averages. No demo-rate vs. production-rate gap.

  • Cross-channel coordination on the same audience

    Resolved identities push to Meta as custom audiences automatically. Run mail + email + SMS + Meta retargeting on the same recipient list with shared attribution. The mail piece anchors the campaign; digital channels reinforce.

Use cases

What teams build with identity resolution.

Cart abandonment to mail

A Shopify visitor adds a high-value item, hesitates, leaves without checking out. The pixel resolves the visit. The next-press-cycle drop mails the abandoned product as a personalized postcard. Email and Meta retargeting fire on the same audience.

High-intent product page visitors

Visitors who reach a pricing page, configurator, or product detail without converting are the highest-intent anonymous traffic on most sites. Resolve them, mail them with the specific product or offer they viewed, retarget them across mail + email + Meta.

Lapsed customer reactivation

Customers who once had an account, then stopped engaging, often return to browse without logging in. The pixel re-identifies them on those return visits and triggers reactivation campaigns — a category of revenue most marketing stacks leave on the table.

B2B account-based mail

Software, financial services, and high-ticket B2B sites resolve anonymous traffic to firmographic identity (company, role, address) for ABM-style direct mail outreach. An alternative to LinkedIn outreach with materially higher response.

Event and ticketing follow-up

Event sites see massive anonymous browse traffic — tour pages, venue pages, date pages — followed by long consideration windows. Resolve the browser, mail with dates that align with their location, push to ticketing CRM for re-targeting in the brand's own stack.

Content-to-commerce monetization

Editorial sites and content-led businesses resolve high-engagement readers and trigger sponsor mail, product mail, or affiliate offers. A direct revenue stream from organic and earned traffic that previously had no monetization path.

Questions

Identity Resolution Platform: questions buyers ask.

Short answers. Comparison-focused — not a sales pitch.

  • How is DirectMail.io's identity resolution different from Customers.ai, Warmly, or LettrLabs?

    All four platforms run identity resolution pixels at the technical layer. The differences are in resolved-record structure and downstream activation. Customers.ai is email-first for DTC e-commerce. Warmly is B2B-focused for sales workflows. LettrLabs runs LeadReveal alongside their direct mail product (the closest analog). DirectMail.io returns full postal identity (name + verified mailing address + email + phone + ~70 demographic fields) and routes resolved records directly into the integrated direct mail + omni-channel campaign engine — including the press queue with variable imaging composing per recipient.

  • What's the match rate?

    Typical match rates land between 50% and 60% on US consumer traffic, with significant variation by traffic source. Paid social typically resolves higher than organic search; direct + branded search higher than display. The dashboard reports actual rates per source on your traffic — no demo-vs-production gap. International traffic resolves materially lower (15-35% on Canada/UK/AU; single digits in EU).

  • Is the pixel CCPA / CPRA compliant?

    Yes. CCPA-compliant by default, GPC browser signals honored, cross-session opt-out propagation, right-to-delete and right-to-know workflows on every resolved record. The pixel collects hashed signals (not PII at the browser layer); matches happen server-side against a graph built from consented sources. DirectMail.io operates as a data processor under signed DPA — not a third-party recipient.

  • Do I have to run my campaigns on DirectMail.io to use the pixel?

    No. Three packaging options: run on DirectMail.io (mail + email + SMS + Meta), push the resolved data into a web-to-print workflow (yours or ours), or push the resolved data into your own CRM and digital tools for activation on your own stack via API/webhooks/SFTP. Many buyers use the pixel as a data layer feeding their existing martech.

  • How fast does mail trigger after a visit?

    Trigger speed depends on the cadence configured. Common: same-day resolution and next-press-cycle mailing (24-48 hours from visit to print). Mail typically arrives 3-7 days after the visit. For high-intent triggers (cart abandon, pricing-page visit), faster cadences are available.

  • How does this compare to retargeting with Meta or Google ads?

    Identity resolution + direct mail and digital retargeting are complementary, not alternatives. Direct mail catches visitors who have stopped responding to digital touches (post-fatigue window). Digital retargeting captures visitors in the active-engagement window. Together they outperform either alone — multichannel campaigns lift response 27-118% over single-channel per LettrLabs 2025 benchmarks.

See identity resolution running on your traffic.

30-minute demo. Bring your URL — we'll model the resolution rate on your specific traffic mix and show the mail + email + Meta retargeting flowing on the same audience.