A good open rate for a B2B quarterly newsletter typically ranges between 13% and 27%. The exact figure can vary depending on your industry, audience, and the quality of your email list. Higher open rates might be achieved if your content is highly relevant and valuable to your audience. Engaging subject lines, personalized content, and well-targeted lists can also boost open rates. Tracking performance over time allows you to understand what resonates with your readers and adjust your strategy to improve results. A steady increase in open rates is a sign of growing audience interest and trust.