The most common AOpen email format is {first}_{last}@aopen.com (e.g. jane_doe@aopen.com), used in about 61% of observed AOpen work emails. AOpen uses 3 address formats in total.
Most likely format — based on 271 observed addresses
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AOpen email formats
60.9% of observed AOpen addresses use the {first}_{last}@ format.
Email formatExampleShare
{first}_{last}@aopen.com
Examplejane_doe@aopen.com
Share60.9%
{first}{last}@aopen.com✓ verified
Examplejanedoe@aopen.com
Share29.9%
{f}{last}@aopen.com
Examplejdoe@aopen.com
Share9.2%
Derived from 271 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 AOpen, that means testing {first}_{last}@aopen.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 AOpen email format is {first}_{last}@aopen.com (for example jane_doe@aopen.com), used in about 61% of observed AOpen work addresses. AOpen also uses 2 other formats for name collisions.
How accurate is this AOpen email format?
This format is derived from 271 real AOpen 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 AOpen email?
Apply the most common pattern to the person's name (e.g. jane_doe@aopen.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 AOpen use?
Beyond {first}_{last}@aopen.com, observed formats include {first}{last}@aopen.com, {f}{last}@aopen.com, in descending order of frequency.
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