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block disposable email

  1. 1. DISPOSABLE E-MAIL ADDRESSES How to get rid of obfuscated online identities.
  2. 2. THE PROBLEM • Many online discussion forums, blogs and websites ask visitors to register before they can post comments, view premium content or download white papers. Usually double-opt in (closed-loop email authentication) is required to get access. • A disposable email account (DEA) will allow the visitor to sign up and verify his registration without exposing his primary email account to spam. • While this behaviour is convenient for more and more users the problems are growing for content providers for several reasons, like: • Users will go inactive, irrespective of your email marketing practices. The main issue here is the opportunity cost. Obviously, you have no chance to develop an email dialog / relationship with a temporary email address. And dead addresses mess with your statistics.
  3. 3. COMMON PRACTICES TO DEAL WITH DEA • Simply accept all subscribers, even if they use temporary email addresses – ignoring instead of solving, • Maintain a local blacklist with commonly known disposable domains – a lot of never-ending work to find them with all existing sub- and alternative domains, • Use freely available public lists – includes the risk of missing domains as well as false positives (will block legit users)
  4. 4. THE EASY AND EFFORTLESS SOLUTION • block-disposable-email.com (BDEA) maintaines a central database of recently used disposable email domains. • Currently (as of August 2012) 1.900 domains are flagged as dea domains. • Every single domain that is stated as a dea domain has been checked by human in order to provide a zero-number of false positives. • BDEA allows to check subscriber domains during the sign-up process instantly. • You simply have to decide what to do with a block response (eg. request a different email address to sign-up, keep the user in a closed sandbox area with less content, …) • Depending on technical, corporate policy, or business related issues appropriate solutions to access the database do exist.
  5. 5. WHO IS USING THE BDEA SERVICE AND WHY • Social Networks (avoid multiple accounts by single users, focus on real users) • Gaming Platforms (avoid troll activities) • Dating Websites, Videochat Networks (refuse multiple sign-ups by same users with the aim to obtain one-time benefits multiple times) • Cloud based contact management platforms (enrich user information) • International Automakers (eg. for online lotteries, make it harder to participate repeatedly) • Media platforms (to avoid illegal or unwanted media uploads done by users of disposable email addresses mainly) • SEO providers, Webhosters, Online Marketers (a combination of the issues listed above)
  6. 6. PRICING • Free for up to 200 queries per month • BDEA provides several prepaid plans (see here for details) • Flatrate for large accounts ( > 1 million queries per month) • Discounts for large volume resellers • Example for 300 queries a day (which means 9.000 new subscribers a month): ~ EUR 60,- average price per month
  7. 7. HOW TO START • Already convinced? Sign-up at www.block-disposable-email.com, follow the registration process and start using the service immediately. • Need some more details? Use the free online checker to see if BDEA detects the domains you have in mind. • Need more concrete information related to your userbase? We are willing to prepare statistics based on your current subscriber data. Please simply send a list of unique domains generated out of your userbase currently (no, we don‘t want to have your customer‘s email addresses). • Business related or technical details needed? Please contact us at any time.
  8. 8. CONTACT • BDEA is represented by Subvento Establishment Schlattfeldweg 14 9491 Ruggell Liechtenstein, Europe • For further information see www.block-disposable-email.com or contact us directly. 24.8.2012

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