Email Validation: bulk Email Validation verification, API & CSV output guide

Email Validation drives SMS routing and channel choice (SMS vs messenger).

Email Validation (email_check) is Cheker.pro bulk Email Validation verification. This guide covers mass phone checks, email_check API, phone intelligence, list hygiene before SMS/messengers, and CSV export for CRM.

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Who it is for

Email Validation is used by SMS hubs, performance marketing, crypto compliance, call centers and SaaS with Reseller API. If your pipeline segments «has Email Validation / not» — this task type covers bulk at scale.

What Email Validation does

Detect whether email addresses are registered on Outlook, Gmail, Yahoo, Mail.ru, or iCloud. Each input line becomes one CSV row with result fields.

Task type: email_check. Family: Email Validation. Input type: email.

Pricing and output on Email Validation landing. Run tasks in dashboard.

Input file format

Upload TXT or CSV: email addresses (one per line). One file = one country only (country code in every line: Brazil 55, US 1, Russia 7).

• Minimum: 2,000 lines per task
• Maximum: 10,000,000 lines (large files auto-split)
• E.164 recommended: +country code, no spaces or brackets
• See format preview in the upload form at Email Validation

Do not mix phone, email and username in one file. From Excel export a single column to CSV — avoid formulas and scientific notation.

Output fields

• Email
• Active
• Provider

Interpret Email · Active · Provider with a clear rule: «yes» → Email Validation channel candidate; «no» → SMS/email fallback or exclude from campaign.

Use cases

• Marketing runs a separate sequence for "Email Validation: yes".
• Marketing runs a separate sequence for "Email Validation: yes".
• Marketing runs a separate sequence for "Email Validation: yes".

How to run a check

1. Sign up at Cheker.pro and top up USDT
2. Open Email Validation — TXT/CSV upload form
3. Wait for completion in «Мои задачи»
4. Download CSV into CRM / SMS hub / BI
5. Automation: Reseller API — email_check

Common mistakes

• Local format without country code → false «no» results.
• Mixed countries in one file → API rejection or wrong output.
• Confusing Email Validation registration with «number is reachable» — different signals.
• Treating «no» as permanent block without re-check after 7–14 days.
• Bulk-check without legal basis (GDPR / local telecom rules) — validation does not replace consent.

Email vs phone for Email Validation

Email variant (email_check) fits CRM records with email only. Do not mix email and phone files in one task.

FAQ

How is Email Validation different from other Email Validation checkers?

Task type email_check: Detect whether email addresses are registered on Outlook, Gmail, Yahoo, Mail.ru, or iCloud. Output: Email · Active · Provider. Compare family variants in the checker catalog and email_check landing.

Minimum batch size and file format for email_check?

Minimum 2,000 lines. email addresses (one per line). One country per file. Format hints on the upload page.

How much does Email Validation cost?

Pay-as-you-go USDT: per-line billing at checker rate. Current price per 10k lines on the email_check card and dashboard after top-up.

API for Email Validation?

Yes. Reseller API: POST /api/v1/check with task type email_check. Keys: API keys, docs: /docs.

Is bulk checking legal?

Use only lists with opt-in or other lawful basis (GDPR, local rules). Cheker.pro acts as processor on your instructions; you define retention and consent policy.

Summary: Email Validation is the bulk layer for Email Validation. Catalog: email_check · run → · Cheker.pro blog