EmailZeno EmailZeno
Event tech SaaS Europe

A webinar platform shipped registration filtering as a customer-facing feature

Their customers ran live events. Embedded verification became a product feature that protected both customers' deliverability and the platform's sending reputation.

Persona: A webinar engagement platform

+22%
Average show-up rate (filtered events)
–61%
Reminder-email bounce rate

What was breaking

Webinar registration forms were a magnet for low-intent and bot signups: people grabbed the recording link with a throwaway address and never showed up. Customers' invite-and-reminder sequences sent to dead inboxes, dragging engagement metrics on the platform's own sending infrastructure down with them.

How emailzeno fit the workflow

The platform embedded the emailzeno API behind every customer registration form as an opt-in filter setting. Customers could choose to reject undeliverable and disposable addresses at the form, or to accept-and-flag for downstream segmentation. Verification became a marketing-page checkbox feature, not just an infrastructure investment.

What changed

Customer-facing show-up rates improved on filtered events. The platform's shared-IP reputation strengthened because aggregate send volume to dead addresses dropped. Verification became one of the most-adopted opt-in features in the platform's settings panel.

“Verification turned a deliverability tax into a feature our customers actively want.”

Director of Product, A webinar engagement platform

The emailzeno building blocks

Embeddable verification

Drop the verification call behind any form your customers configure; per-customer policy lives in your settings model, not ours.

Opt-in policy per customer

Accept-and-flag, reject, or suggest-correction — customer chooses per form. The API returns enough metadata to drive any policy.

Shared-IP protection

Cuts aggregate sends to dead addresses across your customer base, lifting reputation on the IPs you share between tenants.

Questions teams ask before adopting

Yes. Expose a setting like "reject undeliverable", "flag risky", "suggest typo correction". The API returns a status code per address — your settings layer chooses what to do with it.

Per-tenant credit accounting lets you mark up at your own tier or absorb cost as a platform-bundled feature. Many platforms include a small free quota and upsell beyond it.

Under 300 ms p95 — invisible to end-users when called on submit.

Run the same play.

First 300 verifications free. Per-tenant policy supported.

Free forever — no credit card

Clean lists ship faster.
Start free.

300 verifications /mo · five-minute API integration · credit refund on hard bounces. Trusted by senders who treat sender reputation like the asset it is.