Microsoft account check
Check if a phone number has a Microsoft account, singly or in bulk. $0.001 per single check, $0.0005 per check in bulk. Unknown single checks are free.
- Single-check price · USD per check
- $0.001
- Bulk price · USD per check
- $0.0005
What this product checks
Submit a phone number for the Microsoft account check. An account-registration signal does not establish an Outlook mailbox, Microsoft 365 license or email deliverability.
Reading the result
A conclusive yes or no describes the account signal at the time of checking. Unknown means no conclusive answer; it must not be treated as no. A registration signal does not verify identity, consent or message delivery.
Where teams use Microsoft checks
- See whether business or consumer contacts have a Microsoft account linked to their number.
- Enrich B2B lead lists with a Microsoft account signal, without assuming an Outlook mailbox.
- Run it with Apple and Amazon to see which ecosystems a list uses.
Cost example for Microsoft
−50%
1,000 valid unique numbers from one country cost $0.50 at the bulk price ($0.0005 each). A country with only 300 numbers is still checked and is billed as the minimum number of checks: $0.25. Checking the 1,000 numbers one by one at the single-check price would cost $1.00.
This is the cost shown before you submit. Duplicates and invalid rows are removed first; a completed list is charged this amount, unknown results included, and a failed list is refunded in full.
How pricing worksRelated workflow
Check a mixed-country number list in one uploadUpload numbers from many countries at once. Each country is detected, duplicates are flagged and results come back in the original row order. →Microsoft check questions
How much does each Microsoft check cost?
$0.001 per single check, in real time. In a bulk task each country is its own group at $0.0005 per check; a country with only a few numbers is billed as the minimum number of checks. A group is charged in full once its batch completes, unknown rows included, and refunded if the batch fails.
Is an unknown Microsoft result charged?
Not in a single check: only a conclusive answer is charged. In bulk, yes: each country is charged in full once it completes, unknown rows included; a list that fails is refunded. Invalid rows and duplicates cost nothing.
Can I check Microsoft through the API?
Yes. Send POST /api/v1/checks with the product ID microsoft for one input, or POST /api/v1/bulk-jobs with a file for a list.
Example request
Developerscurl "https://api.numdetect.com/api/v1/checks" \
-H "Authorization: Bearer $NUMDETECT_API_KEY" \
-H "Content-Type: application/json" \
-H "Idempotency-Key: $(uuidgen)" \
-d '{
"phone": "+12025550147",
"products": [
"microsoft"
]
}'Illustrative request with a sample number. Replace $NUMDETECT_API_KEY with your key; each run is a real, charged check.
Related services
Ready to check your numbers?
Start right after sign-up, no approval needed. Top up your balance, then check real numbers.