The most common ADK email format is {first}.{last}@adk.jp (e.g. jane.doe@adk.jp), used in about 67% of observed ADK work emails. ADK uses 6 address formats in total.
Most likely format — based on 497 observed addresses
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ADK email formats
66.8% of observed ADK addresses use the {first}.{last}@ format.
Email formatExampleShare
{first}.{last}@adk.jp
Examplejane.doe@adk.jp
Share66.8%
{first}@adk.jp
Examplejane@adk.jp
Share29.0%
{last}@adk.jp
Exampledoe@adk.jp
Share2.2%
{f}{last}@adk.jp
Examplejdoe@adk.jp
Share1.0%
{last}{f}@adk.jp
Exampledoej@adk.jp
Share0.8%
{f}.{last}@adk.jp
Examplej.doe@adk.jp
Share0.2%
Derived from 497 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 ADK, that means testing {first}.{last}@adk.jp 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 ADK email format is {first}.{last}@adk.jp (for example jane.doe@adk.jp), used in about 67% of observed ADK work addresses. ADK also uses 5 other formats for name collisions.
How accurate is this ADK email format?
This format is derived from 497 real ADK 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 ADK email?
Apply the most common pattern to the person's name (e.g. jane.doe@adk.jp), 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 ADK use?
Beyond {first}.{last}@adk.jp, observed formats include {first}@adk.jp, {last}@adk.jp, {f}{last}@adk.jp, {last}{f}@adk.jp, {f}.{last}@adk.jp, in descending order of frequency.
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