The most common NEI email format is {f}{last}@nei.com (e.g. jdoe@nei.com), used in about 73% of observed NEI work emails. NEI uses 4 address formats in total.
Most likely format — based on 484 observed addresses
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NEI email formats
72.7% of observed NEI addresses use the {f}{last}@ format.
Email formatExampleShare
{f}{last}@nei.com
Examplejdoe@nei.com
Share72.7%
{first}.{last}@nei.com
Examplejane.doe@nei.com
Share24.0%
{first}_{last}@nei.com
Examplejane_doe@nei.com
Share2.1%
{first}@nei.com
Examplejane@nei.com
Share1.2%
Derived from 484 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 NEI, that means testing {f}{last}@nei.com 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 NEI email format is {f}{last}@nei.com (for example jdoe@nei.com), used in about 73% of observed NEI work addresses. NEI also uses 3 other formats for name collisions.
How accurate is this NEI email format?
This format is derived from 484 real NEI 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 NEI email?
Apply the most common pattern to the person's name (e.g. jdoe@nei.com), 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 NEI use?
Beyond {f}{last}@nei.com, observed formats include {first}.{last}@nei.com, {first}_{last}@nei.com, {first}@nei.com, in descending order of frequency.
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