The most common Cefetrj email format is {f}{last}@cefet-rj.br (e.g. jdoe@cefet-rj.br), used in about 95% of observed Cefetrj work emails. Cefetrj uses 5 address formats in total.
Most likely format — based on 379 observed addresses
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Cefetrj email formats
94.7% of observed Cefetrj addresses use the {f}{last}@ format.
Email formatExampleShare
{f}{last}@cefet-rj.br
Examplejdoe@cefet-rj.br
Share94.7%
{first}@cefet-rj.br
Examplejane@cefet-rj.br
Share1.8%
{first}.{last}@cefet-rj.br
Examplejane.doe@cefet-rj.br
Share1.8%
{last}@cefet-rj.br
Exampledoe@cefet-rj.br
Share1.1%
{first}{last}@cefet-rj.br
Examplejanedoe@cefet-rj.br
Share0.5%
Derived from 379 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 Cefetrj, that means testing {f}{last}@cefet-rj.br 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 Cefetrj email format is {f}{last}@cefet-rj.br (for example jdoe@cefet-rj.br), used in about 95% of observed Cefetrj work addresses. Cefetrj also uses 4 other formats for name collisions.
How accurate is this Cefetrj email format?
This format is derived from 379 real Cefetrj 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 Cefetrj email?
Apply the most common pattern to the person's name (e.g. jdoe@cefet-rj.br), 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 Cefetrj use?
Beyond {f}{last}@cefet-rj.br, observed formats include {first}@cefet-rj.br, {first}.{last}@cefet-rj.br, {last}@cefet-rj.br, {first}{last}@cefet-rj.br, in descending order of frequency.
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