Upgrade CTA from SEMRush

This is a promotional upgrade email from Semrush targeting users currently on a free plan. It uses a clear and direct structure, starting with a reminder of the free plan limitations (10 requests per day) reinforced by visual elements. The email encourages upgrading to the paid Semrush Pro plan to unlock full access to all tools, emphasizing benefits like market analysis and keyword research. The tone is professional yet motivating, aiming to drive subscription conversions while also including multiple social media links and additional resource offerings at the bottom for engagement.