These inspiring Juneteenth newsletter ideas for 2025 present a chance for your business to honor the holiday authentically through your email marketing. Juneteenth, celebrated on June 19, marks the day in 1865 when enslaved African Americans in Galveston, Texas, were finally informed of their freedom—two and a half years after the Emancipation Proclamation. Officially recognized as a federal holiday in 2021, Juneteenth represents freedom, resilience, and the ongoing pursuit of equality.