请问HN：如何高效地预约客户调研电话？
我是一个独立创始人，正在开发一款B2B SaaS/金融科技产品（尚未发布）。预约客户发现电话的进展非常缓慢。
以下是我迄今为止尝试的内容：
• 从ZoomInfo提取了大约200个潜在客户
• 发送了冷邮件，介绍了我的背景和对早期用户的潜在好处，并提供咖啡/午餐以讨论痛点
• 回复率约为2% → 仅预约了4个电话
我很想听听其他人的成功经验：
1. 除了冷邮件，还有哪些渠道对你有效？
2. 你是如何激励人们与你交谈的（如果有的话）？
3. 有没有哪些主题行或信息能够持续转化？
4. 你通常发送多少次跟进？
任何建议或操作手册都将不胜感激。
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I’m a solo founder working on a B2B SaaS / Fintech product (pre-launch). Booking customer discovery calls has been very slow.<p>Here’s what I’ve tried so far:<p>• Pulled ~200 leads from ZoomInfo
• Sent cold emails explaining my background and potential benefits for early adopters, offering coffee/lunch to discuss pain points
• ~2% reply rate → only 4 calls booked<p>I’d love to hear what’s worked for others:<p>1. What channels besides cold email have worked for you?
2. How do you incentivize people to talk to you (if at all)?
3. Any subject lines or messaging that consistently convert?
4. How many follow-ups do you typically send?<p>Any tips or playbooks would be hugely appreciated.