A good cold email headline for B2B grabs attention fast. You should use personalization to make it stand out. Headlines like "Quick Question About [Their Business]" work well. You must address a pain point or goal in the headline. Phrases like "Boost Your Revenue in 7 Days" create curiosity. You should make the headline short and clear. Avoid generic or overly salesy phrases. You must focus on benefits relevant to the recipient. A question-based headline can spark interest. Something like "Struggling With Lead Generation?" works well. Testing different headlines helps you find the best one for your audience.