Knowledge Base

To display your brand logo in email clients using a Verified Mark Certificate (VMC), your logo must meet strict formatting requirements. Specifically, it must be in Scalable Vector Graphics (.SVG) format and adhere to the SVG Portable/Secure (SVG-P/S) profile.

Learn how to request a Verified Mark Certificate (VMC) easily with this step-by-step guide. Discover the ordering process, account setup, domain validation, trademark and logo requirements, and best practices to ensure smooth certificate issuance.

S/MIME (Secure/Multipurpose Internet Mail Extensions) is a widely adopted protocol for securing email communication through encryption and digital signatures. Gmail supports S/MIME for Google Workspace accounts, allowing users to send encrypted emails that ensure confidentiality, integrity, and authenticity.

Learn how to change certificate trust settings in Keychain Access on macOS. This step-by-step guide helps IT admins and advanced users manage trust preferences to resolve secure connection issues safely.

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.

This guide provides a streamlined process for obtaining and configuring an S/MIME certificate in PFX format on Windows. It covers CSR generation, certificate request and validation via Sectigo, import using Certificate Manager, and final setup in Microsoft Outlook for encrypted and digitally signed email communication.

Access New Sectigo Public Certificate Chain

Learn the steps to generate a Certificate Signing Request (CSR) for an S/MIME certificate using Keychain Access on macOS. This CSR is required to request a digital certificate for secure email communication.

WHOIS Email DCV Deprecation

This article explains How to Configure an email S/MIME certificate with an Android Device as a VPN & app user certificate