The most common IBM email format is {last}@pobox.sk (e.g. doe@pobox.sk), used in about 25% of observed IBM work emails. IBM uses 8 address formats in total.
Most likely format — based on 184 observed addresses
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IBM email formats
25.0% of observed IBM addresses use the {last}@ format.
Email formatExampleShare
{last}@pobox.sk
Exampledoe@pobox.sk
Share25.0%
{first}{last}@pobox.sk
Examplejanedoe@pobox.sk
Share17.4%
{f}{last}@pobox.sk
Examplejdoe@pobox.sk
Share16.3%
{first}.{last}@pobox.sk
Examplejane.doe@pobox.sk
Share16.3%
{last}.{first}@pobox.sk
Exampledoe.jane@pobox.sk
Share6.0%
{f}.{last}@pobox.sk
Examplej.doe@pobox.sk
Share4.3%
{first}{l}@pobox.sk
Examplejaned@pobox.sk
Share3.8%
{last}{f}@pobox.sk
Exampledoej@pobox.sk
Share3.8%
Derived from 184 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 IBM, that means testing {last}@pobox.sk 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 IBM email format is {last}@pobox.sk (for example doe@pobox.sk), used in about 25% of observed IBM work addresses. IBM also uses 7 other formats for name collisions.
How accurate is this IBM email format?
This format is derived from 184 real IBM 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 IBM email?
Apply the most common pattern to the person's name (e.g. doe@pobox.sk), 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 IBM use?
Beyond {last}@pobox.sk, observed formats include {first}{last}@pobox.sk, {f}{last}@pobox.sk, {first}.{last}@pobox.sk, {last}.{first}@pobox.sk, {f}.{last}@pobox.sk, {first}{l}@pobox.sk, {last}{f}@pobox.sk, in descending order of frequency.
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