SendGrid Patents

Patent portfolio assigned to SendGrid (verified via public assignee records). Email API provider, acquired by Twilio (Feb 2019). Patents exist (e.g., US20200213332A1 real-time email verification; CB Insights lists SendGrid patent filings); count not loadable directly. Customer names (Uber/Airbnb/Spotify/eBay) sourced from SendGrid materials via search; could not enumerate live logo wall from own site this task, so relationship marked logo_only.