With Gmail, there is the ability to do "plus addressing", which allows you to set up messages that are easy to filter. For example, if your Gmail address is bob123@gmail.com, you could sent messages to bob123+alerts@gmail.com that would still go to your inbox but could be easily filtered because of that customized email address.
Can I get a confirmation that such email addresses do not work with Smartsheet? I've been doing some testing and I don't think it does. Would be nice if it did as we are a Google house at work.