This module creates a valid sendgrid setup for a given domain, id and domainkey.

module "sendgrid" {
  source             = "./modules/sendgrid"
  domain             = "domain-without-http"
  zone_id            = "zoneid"
  sendgrid_domainkey = "xxxxxxx"
  sendgrid_id        = "0000000"
}

NOTE after validation completes you have to run terraform destroy for this configuration to remove the setup. There is a companion module called tf-sendgrid that provides a production ready setup of sendgrid.

This creates 15 records in AWS Route 53 according to the sendgrid spec.