How many email patterns does Proton use?

Proton uses 16 known email patterns.

What domain does Proton use for work emails?

Proton uses proton.me for work email addresses.

Most Common Email Formats at Proton

Proton's most common email format is First.Last@proton.me (ex. John.Doe@proton.me), used for 63% of proton.me addresses. Proton uses 4 email patterns.

@proton.me

4 patterns

Format	Example	Share of proton.me
First.Last@proton.meMost common	John.Doe@proton.me	63%
F.Last@proton.me	J.Doe@proton.me	16%
First@proton.me	John@proton.me	12%
Last@proton.me	Doe@proton.me	9%

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Frequently Asked Questions

What does Proton do?

Proton was founded in 2014 and operates in the Technology, Information and Internet industry, alongside similar companies like Hushmail and StartMail. You can visit proton.me. Explore Proton's company overview page for more information.

What is Proton's email address format?

Proton's email format typically follows the pattern of First.Last@proton.me; this email format is used 63% of the time. Other contacts within LeadIQ's database had email formats such as F.Last@proton.me and First@proton.me. Looking for more contact data? Unlock accurate emails and phone numbers from millions of profiles verified in real-time.

How many employees does Proton have currently?

Proton has approximately 973 employees as of October 2026. Key team members to contact include Chief Executive Officer: B. V., Chief Executive Officer: J. T. and Chief Technology Officer: B. B. For more team information and contact data, explore Proton's employee directory with LeadIQ.

Proton Email Format

Q: What is Proton's email address format?

Proton's email format typically follows the pattern of ${fn}.${ln}. Other email formats include ${fi}.${ln} and ${fn}.

Technology, Information and InternetGeneva, Switzerland501-1000 Employees

Proton is a Swiss technology company building a privacy-first, open-source ecosystem designed to support a free and open internet. Created by scientists from CERN and MIT and governed by the Proton Foundation, a Swiss non-profit, it operates on a subscription model and does not rely on ads or data mining. Headquartered in Geneva, Switzerland, Proton maintains offices in multiple cities worldwide, underscoring its global reach. Its user base spans journalists, activists, NGOs, academics, and creatives who rely on privacy-focused tools to protect information and communications. In early 2026, Proton launched a Proton VPN browser extension, reflecting ongoing expansion of its privacy ecosystem.

Most common format

First.Last@proton.me

Example: John.Doe@proton.me

4 patterns. See all formats

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Most Common Email Formats at Proton

@proton.me

Need a specific person's email?

Frequently Asked Questions

What does Proton do?

What is Proton's email address format?

How many employees does Proton have currently?

Proton Email Format

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What you can expect from LeadIQ:

Ready to create more pipeline?

Everything for prospecting,
in one platform.