E-mail hashing (EN)

Email hashing is the encoding of email addresses into unique values that are used in outgoing emails. Through e-mail hashing, unknown browser cookies can be linked to known e-mail addresses in Squeezely. The operation is as follows:

From email address to email hash

Based on SHA-256 cryptography, Squeezely automatically creates e-mail hashes for e-mail addresses. For example, email address 'support@squeezely.tech' will be encrypted as: c38f3593a5763671a750cfc7568efb8b7ef37e5cca1d80b4d97af35773e1410e

Curious about your email hash? Enter your e-mail address in this tool.

Incorporating an e-mail hash into e-mails

In outgoing e-mails the parameter of the e-mail hash needs to be added to URLs that lead to the website. For example, a URL in a newsletter from Mijnwebsite.com can contain the following parameter: www.mijnwebsite.com?email=[[data:email_hash]].

When sending emails, the individual email hash is filled in for each recipient. For 'support@squeezely.tech', the URL looks like this: www.mijnwebsite.com?email=c38f3593a5763671a750cfc7568efb8b7ef37e5cca1d80b4d97af35773e1410e

Linking a cookie to an e-mail address

When recipients click on the URLs in the e-mails, the URL containing the parameter of their e-mail hash is loaded into the browser. The Squeezely tracking script captures the email hash from the URL and compares it to the email hashes in the database. If Squeezely finds a matching email hash, the visitor's cookie is linked to the existing profile of the email hash. The website behavior of the cookie is then bundled with the existing profile information.