This is true.. Lastpass probably is better off in a core competency. What is interesting is that dynamic plus aliasing is already free from gmail anyway.. So let's say you have an
email like
myemail@goolge.com you can use plus aliasing to create random numbers and letters so your username (usually your
email) cannot be easily enumerated when registering on multiple sites and let LastPass do what it does best.. store your stuff including
alias emails securely. So for site 1 you could register with
myemail+site175656565GTY@gmail.com you WILL receive the
email confirmation at your
myemail@gmail.com account reguardless of what you put after the +sign and before the @ symbol. Just save the
email alias name in LastPass as your usernamefor each site or you will forget what distinct
alias you used to register with on different sites. Again worth repeating.. Google's dynamic plus aliasing is FREE..
So what this effectively does is two things.. 1) it lets you identify who is spamming you for free as you will see the name of each site if you choose to do it that way I outlined above and 2) If you also append random numbers and letters at the end no one will even be able to guess your username so it is not so easy to enumerate across multiple sites that used to use the same
email address. So you effectively leveraged two technologies.. Dynamic plus aliasing from gmail and lastpass to remember the aliases you used to register on sites as well as the password.. Thereby reducing your exposure across multiple sites where your
email is the username.
You can say thank you now..

keep safe and secure and use lastpass and
email aliases across different sites!!