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.

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.

Learn why public SSL certificates cannot be issued for internal IP addresses or hostnames and explore secure alternatives like private CAs and Sectigo Private PKI solutions for internal systems.

Access New Sectigo Public Certificate Chain

WHOIS Email DCV Deprecation

Guide to generating CSR on Apache Server

Step-by-step Guide to Generating CSR and Installing SSL Certificate on Apache Server

This article explains the steps involved in exporting a PFX (Personal Information Exchange) file format with AES (Advanced Encryption Standard) encryption.

This article explains the steps involved in exporting a PFX (Personal Information Exchange) file format with 3DES (Triple Data Encryption Standard) encryption.