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Trusted SSL/TLS certificates from ZONER a.s. Trusted SSL/TLS certificates
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  • Other certificates

    Code Signing

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    Secure Signing

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    Electronic e-mail signature (S/MIME)

    • Personal certificates (S/MIME)
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    E-mail security and encryption

    • KeyTalk Secure Email (SES)

    Electronic document and PDF signing

    • Certificates for Adobe (AATL)
    • Document and PDF signing

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    • About TLS certificates Why they are needed for communication
  • Automation & PKI

    ACME Certificate Automation

    • ACME Protocol and Clients
    • DigiCert Automation Manager

    Certificate Lifecycle Management

    • Automation and Management of PKI in the Cloud
    • KeyTalk CKMS for PKI Automation
    • DigiCert Automation Manager

    DigiCert ONE Platform

    • DigiCert Trust Lifecycle Manager
    • DigiCert Automation Manager
    • Software Trust Manager
    • Document Trust Manager

    DigiCert X9 PKI

    • DigiCert X9 mTLS certificate with Client Auth EKU

    S/MIME Automation

    • KeyTalk CKMS for PKI Automation
    • Keytalk Secure Email Service (SES)

    Code Signing Automation

    • KeyLocker (Cloud HSM)
    • Software Trust Manager

    Help with Selection

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    • Need help with selection? Comparison of SSL Certificates
    • About SSL Certificates Why they are needed for communication
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  • Help & tutorials

    • Help

      Here you will find answers to frequently asked questions about certificates. Read help Contact support

       

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    Help contents

    • Basic tasks with certificates
    • TLS certificate vetting
    • TLS certificate installation
    • Common tasks with certificates
    • Code Signing certificates
    • Signing and S/MIME certificates
    • Videotutorials
    • Other articles and tutorials

    Managing certificates

    • Certificate installation checker
    • Check CSR or decode certificate
    • Key match checker
    • Creating a new CSR in OpenSSL
    • OCSP check
    • Certificate format converter

    A last resort

    • Glossary of terms Glossary of terms
    • FAQ - frequently asked questions: FAQ - frequently asked questions
    • Automatization ACME protocols and clients
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News archive

  • 2026
  • 2025
  • 2024
  • 2023
  • 2022
  • 2021
  • 2020
  • 2019
  • 2018
  • Apr 16, 2026

    Manage organization verification for ACME

  • Mar 16, 2026

    FIDO2 and Passkeys - New Account Security Options for SSLmarket

  • Mar 13, 2026

    ACME - validity period in days

  • Feb 16, 2026

    X9 certificates from DigiCert with Client Authentication support now available

  • Jan 23, 2026

    Overview of changes effective from February 24, 2026

How we are rated on:   

Customer reviews
We accept payments by card, PayPal and bank transfer

Thawte

  • SSL 123
  • SSL 123 Wildcard
  • Web Server
  • Web Server EV
  • Web Server Wildcard

Secure Site

  • Secure Site
  • Secure Site Pro
  • Secure Site Pro Wildcard
  • Secure Site EV
  • Secure Site Pro EV

GeoTrust

  • Geotrust DV
  • Geo DV Wildcard
  • True BusinessID
  • True BusinessID EV
  • True BusinessID Wildcard

RapidSSL

  • RapidSSL
  • RapidSSL Wildcard

S/MIME

  • Secure Email for Employee & Organization
  • Secure Email for Individual

Electronic signatures

  • Personal (E-mail, S/MIME)
  • Document Signing
  • AATL signing for PDF

DigiCert

  • Standard SSL
  • Wildcard SSL
  • Extended Validation SSL
  • Code Signing
  • Code Signing EV
  • Document Signing Org.
  • Document Signing Ind.
  • DigiCert X9 PKI

Awards

DigiCert Partner of the Year 2019 DigiCert
Partner of the Year 2019
Outstanding Sales Performance Award 2018, 2019, 2020, 2021, 2022 Outstanding Sales Performance Award 2018, 2019, 2020, 2021, 2022
ZONER a.s. logo  
SSLmarket.cz cz
SSLmarket.sk sk
SSLmarket.hu hu
SSLmarket.de de
SSLmarket.at at
SSLmarket.co.uk gb
SSLmarket.jp jp
SSLmarket.ch ch
SSLmarket.com us
SSLmarket.fr fr
SSLmarket.es es
SSLmarket.it it
SSLmarket.mx mx

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