Optimonk

Content marketing through blogs and SEO typically offers the highest ROI for small businesses with limited budgets, as it builds organic traffic over time.

Focus on creating valuable content, engaging directly with followers, collaborating with micro-influencers, and using relevant hashtags to increase organic reach.

Key metrics include open rate, click-through rate (CTR), conversion rate, unsubscribe rate, and list growth rate to measure engagement and ROI.

Consistency is key - aim for at least 2-3 high-quality blog posts per week, plus daily social media updates to maintain audience engagement.

Google Analytics, Google Search Console, Mailchimp reports, Facebook Insights, and Canva for content creation are excellent free options.