The most common Sibs email format is {first}@sibs.pt (e.g. jane@sibs.pt), used in about 87% of observed Sibs work emails. Sibs uses 3 address formats in total.
Most likely format — based on 212 observed addresses
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Sibs email formats
86.8% of observed Sibs addresses use the {first}@ format.
Email formatExampleShare
{first}@sibs.pt
Examplejane@sibs.pt
Share86.8%
{f}{last}@sibs.pt
Examplejdoe@sibs.pt
Share10.8%
{first}.{last}@sibs.pt
Examplejane.doe@sibs.pt
Share2.4%
Derived from 212 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 Sibs, that means testing {first}@sibs.pt 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 Sibs email format is {first}@sibs.pt (for example jane@sibs.pt), used in about 87% of observed Sibs work addresses. Sibs also uses 2 other formats for name collisions.
How accurate is this Sibs email format?
This format is derived from 212 real Sibs 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 Sibs email?
Apply the most common pattern to the person's name (e.g. jane@sibs.pt), 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 Sibs use?
Beyond {first}@sibs.pt, observed formats include {f}{last}@sibs.pt, {first}.{last}@sibs.pt, in descending order of frequency.
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