Detect keyboard mashed email addresses
问题 We're trying to reduce our email bounce rate and often we get people mashing their keyboards. Here's a few example "email addresses" on our suppression list: aaaaaaaaaaaaaaaa5@hotmail.com aaaa_a@hotmail.com 991022865@gmail.com 725668844@gmail.com 82665@gmail.com 81c3988a@mailna.me I wonder if it's possible to write some sort of php function to tell how likely the first part of an email is to be "mashed"? Edit: We do send confirmation emails and run them through a 'validator'. Having a