Number validation
Available
- What it checks
- Whether a mobile number is valid and usable as a line.
- Output
- Valid / Not valid / Undetermined
- Typical use
- Cleaning a CRM or an imported list before any campaign.
Clean and segment your phone lists before you spend on messages and calls
Number validation plus channel presence checks, in bulk. Upload a CSV or paste your numbers, see the credit cost before you confirm, and export a result for every row.
- ✓No code required
- ✓CSV / XLSX or paste
- ✓Exportable results
WhatsApp
RCS
Viber
Telegram
iMessage
Number validation
What you can check
Start from number validation to remove unusable rows, then add channel checks to understand where each contact can actually be reached.
Available
- What it checks
- Whether the number has an active WhatsApp account.
- Output
- Present / Not present / Undetermined
- Typical use
- Preparing a WhatsApp campaign and sizing the audience.
RCS
Available
- What it checks
- Whether the number can be reached over RCS.
- Output
- Present / Not present / Undetermined
- Typical use
- Choosing rich messaging where it is supported.
Viber
Available
- What it checks
- Whether the number has an active Viber account.
- Output
- Present / Not present / Undetermined
- Typical use
- Segmenting audiences in Viber-heavy markets.
Telegram
Available
- What it checks
- Whether the number has an active Telegram account.
- Output
- Present / Not present / Undetermined
- Typical use
- Routing contacts to the channel they already use.
iMessage
Available
- What it checks
- Whether the number is reachable through iMessage.
- Output
- Present / Not present / Undetermined
- Typical use
- Splitting Apple and non-Apple audiences.
Result preview
| Number | Service | Result | Charged |
|---|---|---|---|
| +39 34• ••• 4412 | Number validation | Valid | Billed |
| +34 6•• ••• 190 | Present | Billed | |
| +49 15• ••• 7723 | Number validation | Not valid | Not billed |
| +33 6•• ••• 208 | Not present | Billed | |
| +39 33• ••• 0091 | Number validation | Undetermined | Billed |
Sample data, masked for illustration only.
How it works
The same four steps for every service, with no integration to build.
- 1
Upload or paste
Bring a CSV or XLSX file, or paste your numbers straight into the box.
- 2
Pick the check
Choose number validation or a channel check for the whole list.
- 3
Review before you confirm
You see valid rows, duplicates and the exact credit cost before the job starts.
- 4
Download the results
Export a CSV with a result per row and reuse it in your CRM or campaign tool.
Why check first
A short list of clean numbers beats a long list you cannot use.
Clean your CRM
Imported and legacy databases collect typos, landlines and dead records. A validation pass tells you which rows are still worth keeping.
Prepare WhatsApp campaigns
Knowing who has a WhatsApp account before launch lets you size the audience and plan a fallback for everyone else.
Segment across channels
One list, several channels: use the results to route each contact to a channel where they are actually present.
Cut pointless attempts
Fewer sends to unusable rows means fewer failures to reconcile and cleaner campaign reporting.
What a result looks like
Every job returns one row per number, with the service used, the outcome and the credits actually charged.
| Number | Service | Result | Charged |
|---|---|---|---|
| +39 34• ••• 1180 | Number validation | Valid | Billed |
| +39 34• ••• 1180 | Number validation | Duplicate | Not billed |
| 0039-abc | Number validation | Invalid format | Not billed |
| +44 7•• ••• 553 | Present | Billed | |
| +44 7•• ••• 118 | Technical error | Not billed |
One wallet for every service
Credits are universal: you top up once and spend them on any check. Each service has its own credit cost per number, always shown before you confirm the job.
- Cost per number visible before the job starts
- Invalid formats, duplicates and technical errors are not charged
- Reserved credits go back to the wallet automatically
Frequently asked questions
- What exactly do you verify?
- Two different things. Number validation tells you whether a mobile number is valid and usable. A channel check tells you whether that number appears on a messaging channel, for example WhatsApp. You choose one service per job.
- Can I check a whole list at once?
- Yes. You can upload a CSV or XLSX file or paste the numbers. The platform normalises them, removes duplicates and processes the list in bulk.
- Do you send a message or a notification to the numbers?
- The workflow never asks you to send messages yourself, and you do not connect your own SIM, phone or messaging account to run a check.
- How do credits work?
- One universal wallet covers every service. Each service has a credit cost per number that is shown before the job starts, so you always know what a run will cost.
- Do I pay for duplicates and invalid numbers?
- No. Rows with an invalid format, duplicates and technical errors are not charged: the credits reserved for them return to your wallet.
- What about GDPR and lawful basis?
- You remain the data controller for the numbers you upload and must have a valid legal basis to process them. A check reports a technical status and is never a proof of marketing consent.
- What is the difference between validation and a channel check?
- Validation answers 'is this number usable at all?'. A channel check answers 'is this number present on this channel?'. Many teams validate first and then run a channel check on what is left.
Ready to clean your list?
Create an account, upload a sample of your database and see the results before committing your whole list.