config/environment.rb
# Load the Rails application.
require File.expand_path("../application", __FILE__)
# Initialize the Rails application.
Rails.application.initialize!
ActionMailer::Base.smtp_settings = {
address: "smtp.sendgrid.net",
port: "587",
authentication: :plain,
user_name: ENV["SENDGRID_USERNAME"],
password: ENV["SENDGRID_PASSWORD"],
domain: "heroku.com",
enable_starttls_auto: true
}