Public websiteCustomer conversation platform
DripTell brings WhatsApp, Instagram, Messenger, Telegram and web chat into one workspace, with shared ownership, customer context, automation and AI assistance.
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Product
One workspace for every customer conversation and next action.
Product
One workspace for every customer conversation and next action.
Solutions
Start with the customer outcome your team is responsible for.
Solutions
Start with the customer outcome your team is responsible for.
Industries
See DripTell through the real conversations in your industry.
Industries
See DripTell through the real conversations in your industry.
Free tool · Runs in your browser
Upload a CSV or TXT file, or paste numbers straight in. The validator converts every number to the international format WhatsApp uses, removes duplicates, and flags invalid numbers and landlines. You can download a clean list ready to import and a full report showing what changed. Your file never leaves your browser.
One number per line, or a CSV with a phone column.
Your list is processed by this browser. It is not uploaded to DripTell. Up to 100,000 rows per run.
Paste a list or load the sample
Then press Validate list. You will see how many numbers are ready, which need a check, and which are invalid or repeated.
It takes about a minute. Nothing you enter leaves this page.
Paste numbers one per line, or upload a CSV or TXT file. For CSV files, pick the column that holds the phone numbers.
Set the default country for numbers saved without a country code, such as 050 123 4567.
Choose whether to remove duplicates and whether to keep only mobile numbers.
Download the clean list for your import, and the full report if you want to fix the rejected rows at the source.
A list with mixed formats looks fine in a spreadsheet. The problems show up when you send. Local numbers without a country code fail or reach the wrong country, duplicates get the same offer twice, and landlines inflate your audience size without ever replying.
Each failed attempt still takes time to diagnose, and duplicates can mean paying twice for the same person. Cleaning before you import is the cheapest point to fix it.
WhatsApp's Business Messaging Policy requires that people have agreed to receive messages from you before you contact them. A tidy list of numbers does not change that. If a list was bought, scraped or collected for something else, cleaning it will not make it safe to message. Use this tool on contacts who opted in, then keep the opt in record with each contact.
Each number is parsed against the public numbering plan for its country. That tells us whether the length and prefix are real, which country it belongs to and, for most countries, whether the range is mobile or fixed line. Numbers that start with a plus sign or 00 keep their own country. Everything else uses your default country.
Duplicates are matched on the final international number, so 050 123 4567 and +971501234567 count as the same person.
Straight answers, including the limits.
Upload the CSV or paste the numbers into this page, choose the default country, and download the clean list. Every number is converted to international format, duplicates are removed and invalid numbers are flagged. To confirm which numbers actually have WhatsApp, send an approved template from the WhatsApp Business Platform and review the delivery report.
No. The file is read and processed by your own browser. DripTell never receives the numbers or the file.
E.164 international format with a plus sign, such as +971501234567, plus the country and line type for each number. That format imports cleanly into DripTell and most CRMs.
Their range belongs to fixed lines in the country's numbering plan. Landlines rarely have personal WhatsApp accounts, so you can choose to keep only mobile numbers before you download.
Only people who agreed to hear from you on WhatsApp. WhatsApp's Business Messaging Policy requires opt in before you send, and cleaning the list does not create consent.
Limits and rules on this page were checked against these official pages on 1 November 2026. Platforms change, so confirm before you rely on a limit.
Check if a phone number is valid for WhatsApp, see its country and line type, and get the correct international format.
Open the toolCheck a WhatsApp message template against Meta's published limits and common rejection reasons, then preview it and copy the API payload.
Open the toolEstimate a monthly WhatsApp Business Platform budget from message volumes, current Meta rates and your DripTell plan.
Open the toolDripTell stores contacts in international format, records opt in, and reports delivery and failure reasons for every campaign recipient.
Forever Free plan available for one WhatsApp inbox. No card needed for the trial.
