AWS LightSail WordPress machine does not come with an email server. So you can’t send an email on the AWS LightSail server by default. Here is how you can configure Email service on your AWS LightSail WordPress Server.
If you are using AWS LightSail to host your WordPress websites, there may be times when you want to upgrade your server or tech stack to properly support the site. Here is a tutorial that can help you while upgrading your AWS LightSail server.