Marketing emails are used as a way to generate leads and keep in touch with current ones for your ICO. Keeping a list of potential investors is not only smart but ideal for when it comes time to send your marketing emails. You can send them in the form of a newsletter that updates subscribers weekly. You can also add a personal touch and speak with investors one-on-one. This is where most companies or projects hire a professional writer to create the content for them, as it could be the difference between finding a new investor and losing one forever.
If there are any new releases or announcements associated with your ICO, you can send out a marketing email and let investors know. Not only that, but you can use it as a way to alert people of when the ICO is live as well.