Home/ Questions/Q 7768913
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-01T16:02:40+00:00

I setup send grid starter for my heroku app. I put this in my

  • 0

I setup send grid starter for my heroku app.

I put this in my config/environment.rb:

ActionMailer::Base.smtp_settings = {
  :user_name => ENV["SENDGRID_USERNAME"],
  :password => ENV["SENDGRID_PASSWORD"],
  :domain => "my-sites-domain.com",
  :address => "smtp.sendgrid.net",
  :port => 587,
  :authentication => :plain,
  :enable_starttls_auto => true
}

I create this class models/notifier.rb:

class Notifier < ActionMailer::Base

  def notify()
    mail( 
      :to => "my-email@gmail.com",
      :subject => "New Website Contact",
      :body => "body",
      :message => "message",
      :from => "website@my-sites-domain.com"
    )
  end

end

I put this in another controller to send the email:

def contact
  Notifier.notify().deliver
  redirect_to("/", :notice => "We Have Received Your Request And Will Contact You Soon.")
end

When I deploy and try to send an email I get this error:

Net::SMTPAuthenticationError (535 Authentication failed: Bad username / password

I have setup send grid completely and it says I am ready to send emails.

I also ran heroku config --long to get the actual password and user name and hard coded them and that still gave me the same error.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    I had tried to set my password with the command:

    heroku config:add SENDGRID_PASSWORD=my-new-password

    But it turns out this only changes what heroku has stored as your password, it doesn’t actually change your password. You also cannot retrieve your password after doing this.

    What I had to do was remove and re-add the sendgrid add on.

    • 0