Bump is an AI collections engine for accounts receivable. It works every overdue invoice to paid — chasing across email and WhatsApp, reading replies, tracking promises and payment plans, and escalating on its own — so getting paid runs itself. Like adding a collections team, without hiring one.
痛点：B2B 中小企业应收账款催收耗时、逾期发票跟进不连续，需要自动化跨 email/WhatsApp 的催款与承诺跟踪。
目标用户：中小企业财务/AR 团队、代理机构、自由职业者、SaaS 与批发类需要催收发票的商家。
证据：Like adding a collections team, without hiring one. It works every overdue invoice to paid — chasing across email and WhatsApp, reading replies, tracking promises and payment plans, and escalating on its own
变现：按公司/坐席订阅，$49-$199/月，或按发票量/追回金额抽成；可加 WhatsApp 消息费与支付通道分成。
MVP：2 周内做轻量 AR 催收助手：连接 Gmail/Outlook 与 Stripe/QuickBooks/Xero，导入逾期发票，AI 生成并定时发送个性化催款邮件，解析回复识别承诺付款/争议，提供待跟进仪表盘；WhatsApp 可先用 Twilio 做最小闭环。
竞品：Chaser、Upflow、Growfin、Kolleno、HighRadius、Paidnice、YayPay
摘要：Product Hunt 上线 Bump，定位 AI 应收账款催收团队，跨 email 和 WhatsApp 追逾期发票、读取回复、跟踪承诺与分期并自动升级。热度仅 4 votes，无用户付费原话或收入数据，但 B2B 催收是真实痛点；竞品较多，独立开发者可从邮件催收+发票集成做轻量 MVP。