C1.fi is a vaulted email service from Finland:

Note: Multi-account plans, with custom domain support, are scheduled to be available from the beginning of November 2022.

How can I create my self a C1.fi account?

By filling in the sign-up form. Please find a “step by step” guidance video below:

All new accounts are entitled for a 30 day free trial period.

Message secrecy - How does that work?

When a new account is registered, C1.fi creates an individual cryptographic key pair for it. C1.fi will use the account specific public key to encrypt all serverside stored messages before these messages are written into our mass storage. This way the cleartext read access to message data on our servers is limited to the account holder sessions which makes message exchange between C1.fi accounts extremely well protected.

Interaction with third party email services

C1.fi has a strict DANE policy which aims to ensure TLS encryption for email transmission. C1.fi implements DANE in our public email domains and follows DANE with counterparts who comply with DANE.

For additional security we encourage our clients to use PGP for encrypting and signing their messages. Our webmail app supports PGP as well.

C1.fi implements strict DMARC policy in our public domains which asks the receiving end to reject messages which do not pass SPF or DKIM inspections.

Client tracking?

No third party tracking mechanisms are present or used on our websites.

Respecting privacy and mode of earning

C1.fi is a paid service. This allows us to develop and maintain our service without the need of doing business on client data.

Service price - EU
Service price - Outside EU

C1.fi is provided to you by Fennosys Oy. Fennosys is A Finland based company with a representative office in Taiwan.

C1.fi is hosted on our own hardware located at Lohja, Finland. The facility is equipped with modern surveillance, access control and backup power systems. Cricital functions are duplicated.

Fennosys aims towards trustworthy and privacy respecting information and communication solutions for people and businesses on multiplanetary scale. Thank you for working with us.

Updated: Sat 17 Sep 11:46:12 UTC 2022


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