Professor and Research Email
University faculty pages with public emails get heavy spam. Obfuscation is worth doing.
HTML entities (recommended)
Each character becomes a numeric HTML entity. Browsers render it as the original email, but most simple scrapers reading the raw HTML see gibberish.
<a href="mailto:hello@example.com">hello@example.com</a>
How it renders in a browser:
π‘ Modern spam bots are sophisticated. Obfuscation slows them down but isnβt bulletproof. For maximum protection, combine with: server-side rate limiting on contact forms, honeypot fields, and reCAPTCHA-equivalent. For low-stakes use (a contact page on a small site), HTML entity obfuscation cuts scraper hits by ~60-80%.
Academic tips
Many universities require professor emails on faculty pages. Obfuscation reduces spam without violating the policy.
For research lab pages, obfuscating PI and graduate student emails reduces ongoing spam load.
For collaborators visiting the page, obfuscated emails still work β they click the mailto link as normal.
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