Leverage influencer endorsements: Once you have established a strong relationship with an influencer, you can explore opportunities for them to endorse your brand or products. This can be in the form of testimonials, case studies, or even influencer partnerships for specific campaigns. Influencer endorsements can significantly boost your credibility and help you expand your B2B email list. Building relationships with industry influencers can be a valuable strategy for B2B email list acquisition. Here are some steps to help you build relationships with industry influencers: Identify relevant influencers: Start by researching and identifying influencers who have a strong presence in your industry and are followed by your target audience.