Signal checker signal: use cases, compliance & integration

Signal checker on Cheker.pro: file upload → CSV, no manual number probing.

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

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Who it is for

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

What Signal Checker does

Signal account detection and verification by phone number. Each input line becomes one CSV row with result fields.

Task type: signal. Family: Signal. Input type: phone.

Pricing and output on Signal Checker landing. Run tasks in dashboard.

Input file format

Upload TXT or CSV: phone numbers in international format (E.164 recommended, e.g. +14155552671). One file = one country only (country code in every line: Brazil 55, US 1, Russia 7).

• Minimum: 500 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 Signal Checker

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

• Number
• signal: yes/no

Interpret Number · signal: yes/no with a clear rule: «yes» → Signal channel candidate; «no» → SMS/email fallback or exclude from campaign.

Use cases

• CRM enrichment before look-alike campaigns.
• Antifraud adds signal to risk score.
• CRM enrichment before look-alike campaigns.

How to run a check

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

Common mistakes

• Local format without country code → false «no» results.
• Mixed countries in one file → API rejection or wrong output.
• Confusing Signal 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.

Reading yes/no

"No" on Signal may mean no account, privacy settings, or upstream lag. Do not auto-block on one field alone.

FAQ

How is Signal Checker different from other Signal checkers?

Task type signal: Signal account detection and verification by phone number. Output: Number · signal: yes/no. Compare family variants in the checker catalog and signal landing.

Minimum batch size and file format for signal?

Minimum 500 lines. phone numbers in international format (E.164 recommended, e.g. +14155552671). One country per file. Format hints on the upload page.

How much does Signal Checker cost?

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

API for Signal Checker?

Yes. Reseller API: POST /api/v1/check with task type signal. 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: Signal Checker is the bulk layer for Signal. Catalog: signal · run → · Cheker.pro blog