With a good web based contact management software, you can easily automate follow-up reminders - https://getprospect.com/crm . This means you don't have to worry about keeping track of hundreds of emails in order to ensure that you don't miss a single one. There are also built-in reminders that remind you to follow-up with contacts. Web based contact management software is ideal for centralizing all your communication channels and pulling conversations from all of them.