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MeSince Authentication Service

MeSince, lets every email has an identity (certificate signing) to eliminate email fraud; MeSince, lets every email be encrypted (certificate encrypting) to eliminate email leak. “Having identity” means “Be authenticated”. MeSince Authentication Service is done by China MIIT Licensed CA – WoTrus CA Limited, and the certificates also are issued by WoTrus CA.

MeSince authentication service has two types: free automated validation and charged manual validation. The default automated validation only validates the email control that operated by machine automatically, so it is free. After finishing the auto-validation, an encrypting certificate and a V1 signing certificate are installed, to provide basic email encryption and signing service for free without any limit (personal use or commercial use).

MeSince users can apply the charged validation service, individuals can apply Individual Validation service, and organizations can apply Organization Validation service. After finishing the identity validation, the identity information will be included in the V2/V3/V4 identity certificate, then the sender can use this identity certificate to send email, the recipient can be sure about the true identity of the sender. MeSince authentication service pattern is that we only charge the validation fee; except that all certificates are free without quantity limit. And the free validation service’s certificates also are free and no limit.

MeSince lets every email has an identity (certificate signing), which means that each email address has one identity, it can be an individual identity or an organizational identity. The default configured V1 level certificate is free for all email addresses (unless it is blacklisted). The V2 identity certificate issued after finishing the individual validation, this level certificate contents the real name of the person and the person’s province, city and country. The V3 Identity Certificate is issued after finishing the organization validation, this certificate contents the employee's work email, organization name, registration number, the organization’s province, city and country. And employee can apply V4 Identity Certificate by himself/herself, this certificate contents the employee's name, title, the organization name, registration number, the organization’s province, city and country.

The personal email address is used for personal communications, and the work email address is used for organizational communication. The email address used for personal communications is configured with a V1 signing certificate by default. If an individual validation is applied, a V2 identity certificate will be automatically configured. The email address used for organizational communication will also be configured with a V1 signing certificate by default. If the organization applies for organization validation, it will automatically configure a V3 identity certificate for all employees and a V4 identity certificate can be applied by employee.

MeSince default V1 signing certificates and encrypting certificate can meet the basic requirements of email encrypting and signing. The only difference from V2/V3/V4 identity certificate is that V1 signing certificate contents email address only. If the user has applied charged validation, the user can still select the identity certificate with different levels as the default identity certificate in different situations. The V1 signing certificate can still be used in the application scenario where the real identity information is not desired to be displayed.

MeSince automatically configures the V2/V3/V4 identity certificate with identity information for the validated user to display the sender's true identity to the mail recipient, enhance the online trust and prevent the identity fraud.

The identity validated user can use MeSign eSigning Service in MeSince APP to sign the electronic contract using Adobe trusted certificate for free, which conforms to most countries electronic signature laws. And freely digitally sign PDF files to prevent illegal tampering, illegal counterfeiting and illegal leak. Adobe Reader can validate the signed PDF files automatically to display the true identity information of the document signer, it supports LTV (Long-Term Validation) and embedded timestamp information.

If you are using the USB Key certificate (Qualified Certificate in EU) issued by the MeSince Global Cooperative CA, then you can apply for the free Individual Validation and Organization Validation and enjoy all the value-added services of the identity validated user for free.

Currently, the following global CA is cooperated with MeSince (the name list is in no particular order, and it is constantly increasing):

China MIIT Licensed CA: WoTrus CA, DFCA, eCard CA, CTI CA, Xijiang CA, Jiangxi CA, Fujian CA, CQCCA, GFACA, Zhejiang CA, Anhui CA.

Worldwide Licensed CA: Certum (Poland)

Individual Validation Apply Install V2 Identity Certificate with V2 icon. US$4.99/1Y. Unlimited number of certificates.
Organization Validation Apply Install V3 Identity Certificate for employees with V3 icon, and install V4 Identity Certificate for Executives with V4 icon. US$89.99/1Y. Unlimited number of certificates.
User Type For all users
Validation Type Free validation (V1)
Security Level Security
Trust Level Trust
Verification Level Verification
Validation Fee US$ 0.00
Auto Validation Free forever
Certificate Fee Free
Signing Certificate Type V1 Signing Certificate
Encrypting Certificate Type V1 Encrypting Certificate
Certificate Period Identity Cert 13 Months
Encryption Cert 39 Months, auto renewal for free.
(The expired certificate is still used for decrypting the encrypted email using the expired certificate.)
Certificate Quantity No limit
One Encrypting certificate,
One V1 signing Certificate
Signing Certificate Subject Email only
Validation Process time Real time, auto
Renewal Free
Proof Documents No
Usage Can be used for individual email and organizational email encryption and digitally signing freely.
User Type For Individual
Validation Type Individual Validation (V2)
Security Level Security Security
Trust Level Trust Trust
Verification Level Verification Verification
Validation Fee US$ 0.00
Auto Validation Free forever
Certificate Fee Free
Signing Certificate Type V2 Identity Certificate
Encrypting Certificate Type V1 Encrypting Certificate
Certificate Period Identity Cert 13/26/39 Months
Encryption Cert 39 Months, auto renewal for free.
(The expired certificate is still used for decrypting the encrypted email using the expired certificate.)
Certificate Quantity No Limit
One Encrypting certificate,
One V1 signing Certificate,
One V2 Identity Certificate
Signing Certificate Subject Email, Name, Location, State, Country
Multi-language Support Two languages V2 Identity Certificates for free, One for native language (ID language), one for other language
Multi-language Fee
(One-time charge)
US$1.99 per language
Validation Process time One workday
Refund Policy Unconditional full refund before the validation is completed, no refund if the validation has been completed
Renewal 20% discount on the renewal before the expiration of the validation
Proof Documents ID Card and other named documents, hold ID card in hand to take picture
MeSign eSigning Service Free for use, no limit
Usage Can be used in scenarios where you need to prove your personal identity in email signing, PDF signing and e-Contract signing.
User Type For Organization
Validation Type Organization Validation (V3)
Security Level Security Security Security
Trust Level Trust Trust Trust
Verification Level Verification Verification Verification
Validation Fee US$89.99 /1Y
US$169.99 /2Y
US$249.99 /3Y
Certificate Fee Free
Signing Certificate Type V3 Identity Certificate
Encrypting Certificate Type V1 Encrypting Certificate
Certificate Period Signing Certificate 13/26/39 Months
Encryption Cert 39 Months, auto renewal for free.
(The expired certificate is still used for decrypting the encrypted email using the expired certificate.)
Certificate Quantity One Encrypting certificate, One V1 signing Certificate, One V3 Identity Certificate for every employee.

No email domain limit,
No certificate quantity limit,
No employee quantity limit.
Signing Certificate Subject work Email, Organization name, Registration number, Locality, State, Country
Multi-language Support Two languages V3 Identity Certificates for free, one for native language (registered language), one for other language that set by the Applicant.
Validation Process time One workday
Refund Policy Unconditional full refund before the validation is completed, No refund if the validation has been completed
Renewal 20% discount on the renewal before the expiration of the validation
Proof Documents Authorization Letter from organization, and finish the email domain validation
MeSign eSigning Service Free for use for 3 employees
Usage Can be used in scenarios where you need to prove your true identity as an employee of an organization in email signing, PDF signing and e-Contract signing.
User Type For Organization
Validation Type Organization Validation (V4)
Security Level Security Security Security Security
Trust Level Trust Trust Trust Trust
Verification Level Verification Verification Verification Verification
Validation Fee One-time charge, Paid by employee: $4.99;
Volume Purchase by Admin(per employee):
less than 10: $4.99
between 10-99: $3.99
between 100-999: $2.99
1000 or more: $1.99
Certificate Fee Free
Signing Certificate Type V4 Identity Certificate
Encrypting Certificate Type V1 Encrypting Certificate
Certificate Period Signing Certificate 39 Months, auto renewal for free.
(The expired certificate is still used for decrypting the encrypted email using the expired certificate.)
Certificate Quantity One Encrypting certificate, One V1 signing Certificate, One V4 Identity Certificate for validated employee.

No email domain limit,
No certificate quantity limit,
No employee quantity limit.
Signing Certificate Subject work email, employee name, title, Organization name, Registration number, Locality, State, Country
Multi-language Support Two languages V4 Identity Certificates for free, one for native language (ID language), one for other language that set by the Applicant.
Multi-language Fee
(One-time charge)
US$1.99 per language. Employee can apply and paid by Employee.
Validation Process time One workday
Refund Policy Unconditional full refund before the validation is completed, No refund if the validation has been completed
Renewal One-time charge, auto-renew if the V3 validation is renewed
Proof Documents ID Card and other named documents, hold ID card in hand to take picture
MeSign eSigning Service Free for use, no limit
Usage Can be used in scenarios where you need to prove your true identity as an employee of an organization in email signing, PDF signing and e-Contract signing.

MeSince is a free email client APP, the auto-configured V1 Signing Certificate and Encrypting Certificate are also free, and free time stamping for every encrypted and signed outgoing email.

MeSince also provides a fee-based authentication service, and automatically configures the V2/V3/V4 identity certificate with identity information for the validated user to display the sender's true identity to the mail recipient, enhance the online trust and prevent the identity fraud.

The identity validated user can use MeSign eSigning Service in MeSince APP to sign the electronic contract using Adobe trusted certificate for free, which conforms to many countries electronic signature laws. And freely digitally sign and encrypt PDF files to prevent illegal tampering, illegal counterfeiting and illegal leaking. Adobe Reader can validate the signed PDF files automatically to display the true identity information of the document signer, it supports LTV (Long-Term Validation) and embedded timestamp information.

You can apply for the charged Individual Validation and Organization Validation, or you can apply for the free Individual Validation and Organization Validation by using the USB Key certificate(Qualified Certificate in EU) issued by the MeSince Global Cooperative CA, and enjoy the value-added services of the identity validated user for free.

The different levels of identity validation fees are shown in the table below. If you have any questions, please visit the FAQ.

If you have Cooperative CA issed USB Key certificate, please click here to get the free MeSince Validation service.

User Type For all users For Individual For Organization
Validation Type Free validation (V1) Individual Validation (V2) Organization Validation (V3) Organization Employee Validation (V4)
Security Level Security Security Security Security Security Security Security Security Security Security
Trust Level Trust Trust Trust Trust Trust Trust Trust Trust Trust Trust
Verification Level Verification Verification Verification Verification Verification Verification Verification Verification Verification Verification
Validation Fee US$ 0.00
Auto Validation
Free forever
US$4.99 /1Y
US$8.99 /2Y
US$12.99 /3Y
US$89.99 /1Y
US$169.99 /2Y
US$249.99 /3Y
One-time charge, Paid by employee: $4.99;
Volume Purchase by Admin(per employee):
less than 10:  $4.99
between 10-99:  $3.99
between 100-999:  $2.99
1000 or more:  $1.99
Certificate Fee Free Free Free Free
Apply Apply Apply
Signing Certificate Type V1 Signing Certificate V2 Identity Certificate V3 Identity Certificate V4 Identity Certificate
Encrypting Certificate Type V1 Encrypting Certificate V1 Encrypting Certificate V1 Encrypting Certificate V1 Encrypting Certificate
Certificate Period Signing Certificate 13 Months 13/26/39 Months 13/26/39 Months 13/26/39 Months
Encryption Cert 39 Months, auto renewal for free.
(The expired certificate is still used for decrypting the encrypted email using the expired certificate.)
Certificate Quantity No limit One Encrypting certificate, One V1 signing Certificate No Limit One Encrypting certificate, One V1 signing Certificate, One V2 Identity Certificate One Encrypting certificate, One V1 signing Certificate, One V3 Identity Certificate for every employee.

No email domain limit, No certificate quantity limit, No employee quantity limit.
One Encrypting certificate, One V1 signing Certificate, One V4 Identity Certificate for validated employee.

No email domain limit, No certificate quantity limit, No employee quantity limit.
Signing Certificate Subject Email only Email, Name, Location, State, Country work Email, Organization name, Registration number, Locality, State, Country work email, employee name, title, Organization name, Registration number, Locality, State, Country
Multi-language Support Two languages V2 Identity Certificates for free, One for native language (ID language), one for other language Two languages V3 Identity Certificates for free, one for native language (registered language), one for other language that set by the Applicant. Two languages V4 Identity Certificates for free, one for native language (ID language), one for other language that set by the Applicant.
Multi-language Fee
(One-time charge)
US$1.99
per language
US$1.99 per language. Employee can apply and paid by Employee.
Validation Process time Real time, auto One workday One workday One workday
Refund Policy Unconditional full refund before the validation is completed, no refund if the validation has been completed
Renewal Free 20% discount on the renewal before the expiration of the validation One-time charge, auto-renew if the V3 validation is renewed
Proof Documents No ID Card and other named documents, hold ID card in hand to take picture Authorization Letter from organization, and finish the email domain validation ID Card and other named documents, hold ID card in hand to take picture
MeSign eSigning Service Free for use, no limit Free for use for 3 employees Free for use, no limit
Usage Can be used for individual email and organizational email encryption and digitally signing freely. Can be used in scenarios where you need to prove your personal identity in email signing, PDF signing and e-Contract signing. Can be used in scenarios where you need to prove your true identity as an employee of an organization in email signing, PDF signing and e-Contract signing.