PandaDoc change history: Email delivery issues

PandaDoc reported a major email-delivery incident affecting EU and US & Global document sending/opening from 2024-10-30 12:23 UTC to 2024-10-31 20:49 UTC, lasting 32 h 26 min. Fraudulent signups triggered Spamhaus phishing flags, blocklisting an email domain and IP ranges; some emails went to spam or quarantine. PandaDoc implemented mitigation measures, suggested link/SMS alternatives, and marked the incident resolved.