The most common C1000 email format is {first}{last}@c1000.nl (e.g. janedoe@c1000.nl), used in about 92% of observed C1000 work emails. C1000 uses 2 address formats in total.
Most likely format — based on 303 observed addresses
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C1000 email formats
92.1% of observed C1000 addresses use the {first}{last}@ format.
Email formatExampleShare
{first}{last}@c1000.nl
Examplejanedoe@c1000.nl
Share92.1%
{first}.{last}@c1000.nl
Examplejane.doe@c1000.nl
Share7.9%
Derived from 303 real observed addresses · data refreshed 2026-05-30. Role-based inboxes (info@, sales@, …) are excluded from format detection.
Verify the pattern before you send
Start with the format that appears most often. For C1000, that means testing {first}{last}@c1000.nl first, then verifying the exact address before it reaches your CRM or sequencer. A pattern can be common and still produce bad guesses when a person uses a nickname, a middle initial, a regional mailbox, or an older alias.
VeriMails checks syntax, MX records, SMTP behavior, disposable domains, and catch-all detection so you can keep valid addresses and skip risky ones. For larger files, credits start at $19 for 10,000 verifications and never expire. Create a free account, test the pattern on a few addresses, then buy more credits only when you need volume. Run the check again before a large campaign if the list is old, because domains change mail routing and people leave.
The most common C1000 email format is {first}{last}@c1000.nl (for example janedoe@c1000.nl), used in about 92% of observed C1000 work addresses. C1000 also uses 1 other format for name collisions.
How accurate is this C1000 email format?
This format is derived from 303 real C1000 addresses observed across our data, not guessed. To confirm a specific address, use the live verifier above — it checks deliverability in real time.
How do I find and verify a specific person's C1000 email?
Apply the most common pattern to the person's name (e.g. janedoe@c1000.nl), then verify it on this page — or use the Find tab to get the likely address from their name automatically.
What other email formats does C1000 use?
Beyond {first}{last}@c1000.nl, observed formats include {first}.{last}@c1000.nl, in descending order of frequency.
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