Knowledge Base

Learn how to achieve DMARC compliance for Verified Mark Certificates (VMC). This guide explains DMARC, its importance for email security, and step-by-step instructions for configuring SPF, DKIM, and DMARC records.

Access New Sectigo Public Certificate Chain

WHOIS Email DCV Deprecation

This document explains how to import, configure, and use your SMIME / Email Certificate on an iOS device (such as an iPhone or iPad)

Understanding Certificate Transparency (CT) Logs and Precertificates

Enterprise Public Key Infrastructure (E-PKI) Manager User guide

Generate a CSR for an S/MIME email certificate using the built-in Windows certreq command.

This article describes how to configure your email (S/MIME) certificate in Microsoft Outlook 2016 so you can sign and encrypt email.

Sectigo customers can sign and encrypt Outlook email from a Windows workstation by generating a key pair locally, requesting an email certificate from Sectigo, and importing the issued certificate for use as a digital identity.

Use the built-in Keychain Access utility on macOS to generate a Certificate Signing Request (CSR) for a secure email certificate, then submit the CSR to Sectigo to obtain the issued certificate.