Original Summary

Hey everyone! I recently built and deployed a lightweight email verification API using FastAPI and hosted on Render, designed specifically for clean lead ingestion, CRM pipelines, and SaaS sign-up forms. Most mainstream verification services charge high minimum commitments or are too slow for real-time batch checks. I wanted something clean, predictable, and fast. What it does: - Batch Processing: Validate up to 100 emails concurrently in a single POST /v1/verify/batch call. -Smart B2B Filters: Server-side filtering using flags like deliverable_only, business_only, no_role_only, exclude_free, and disposable_only. - RFC 7505 Null-MX Check: Accurately catches dead domains and parked assets. - In-memory cache & Async checks: Low-latency DNS lookups with zero bloat in JSON responses. It is live on RapidAPI with a permanent free tier of 100 requests/month if anyone wants to test it on their forms or side projects: https://rapidapi.com/albertofigueroam45/api/ultra-fast-email-verification-b2b-lead-hygiene I would love to get feedback on the JSON response format, filter options, or any edge cases with specific domain providers!   submitted by   /u/Unusual_Nobody_106 [link]   [comments]

  • 情报分类：商业与市场研究
  • 分类依据：内容涉及商业、投资或市场动态
  • 信息来源：Reddit · SideProject
  • 发布时间：2026/9/25 20:52:07