> 4. Resist the temptation for something smarter I worked on SaaS product with a largely non-technical audience, and we had a frequent issue with people mistyp

> 4. Resist the temptation for something smarter I worked on SaaS product with a largely non-technical audience, and we had a frequent issue with people mistyping their email addresses. We tried several things. Turned out that both confirmation email and asking to type email twice hurt conversion rates badly (in our case - all audiences are different). However, checking email for potential typos worked really well. We had a small set of rules: 1. Domain is very close to a popular email provider (@gnail.com, or @yaho.com, etc.). 2. Email contains a fragment very close to user name: pol@rodgers.tld for Poul Rodgers. 3. We had universities as customers, and a lot of students would enter "name@university-domain.com" instead of "name@university-domain.edu". We had a special check for it. Overall, a couple lines of JavaScript helped us to get rid of 97% of mistyped email addresses.