Proton Email Format

The most common Proton email format is {first}{l}@proton.com (e.g. janed@proton.com), used in about 96% of observed Proton work emails. Proton uses 7 address formats in total.

Most likely format — based on 1,121 observed addresses

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Proton email formats
96.4% of observed Proton addresses use the {first}{l}@ format, the most common pattern among Internet companies.
Email formatExampleShare
{first}{l}@proton.com
Examplejaned@proton.com
Share96.4%
{last}{f}@proton.com
Exampledoej@proton.com
Share1.3%
{first}@proton.com
Examplejane@proton.com
Share1.0%
{first}{last}@proton.com
Examplejanedoe@proton.com
Share0.7%
{last}@proton.com
Exampledoe@proton.com
Share0.3%
{f}{last}@proton.com
Examplejdoe@proton.com
Share0.2%
{f}.{last}@proton.com
Examplej.doe@proton.com
Share0.1%

Derived from 1,121 real observed addresses · data refreshed 2026-05-30. Role-based inboxes (info@, sales@, …) are excluded from format detection.

About Proton
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Industry
Internet
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Frequently asked questions
What is Proton's email format?
The most common Proton email format is {first}{l}@proton.com (for example janed@proton.com), used in about 96% of observed Proton work addresses. Proton also uses 6 other formats for name collisions.
How accurate is this Proton email format?
This format is derived from 1,121 real Proton 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 Proton email?
Apply the most common pattern to the person's name (e.g. janed@proton.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 Proton use?
Beyond {first}{l}@proton.com, observed formats include {last}{f}@proton.com, {first}@proton.com, {first}{last}@proton.com, {last}@proton.com, {f}{last}@proton.com, {f}.{last}@proton.com, in descending order of frequency.
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