Devise emails sending as plaintext.

[dgobhai]

attempting to isolate the problem, I have disabled tracking

# config/environments/production.rb
Rails.application.configure do
  config.action_mailer.delivery_method = :sparkpost

# config/initializers/sparkpost_rails.rb
SparkPostRails.configure do |c|
  c.api_key       = ENV.fetch('SPARKPOST_API_KEY')
  c.sandbox       = false
  c.track_clicks  = false
  c.track_opens   = false
  c.transactional = false
end

Emails sent with our custom mailer are sending fine, however Devise generated emails: Forgot password, are sending as plaintext when they should be html.

I'm trying to figure out what devise is doing with type, still looking...

[dgobhai]

Continuing investigation on a new rails app: https://github.com/dgobhai/sparkpost

Docs say config file/block is not necessary:

Note that an initializer file is not required to use this gem. If an initializer is not provided, default values will be used. See "Additional Configuration" below for a list of all the default settings.

but it seems to be. Here is the error output from heroku log when attempting to send a forgot password email from devise:

2016-10-14T21:45:58.699558+00:00 app[web.1]: <p>Your password won't change until you access the link above and create a new one.</p>
2016-10-14T21:45:58.699559+00:00 app[web.1]: 
2016-10-14T21:45:58.699842+00:00 app[web.1]: Completed 500 Internal Server Error in 428ms (ActiveRecord: 5.4ms)
2016-10-14T21:45:58.701412+00:00 app[web.1]: 
2016-10-14T21:45:58.701416+00:00 app[web.1]: NoMethodError (undefined method `html_content_only' for nil:NilClass):
2016-10-14T21:45:58.701418+00:00 app[web.1]:   vendor/bundle/ruby/2.2.0/gems/sparkpost_rails-1.4.0/lib/sparkpost_rails/delivery_method.rb:164:in `prepare_inline_content_from'

[dgobhai]

After adding the config:

SparkPostRails.configure do |c|
  c.api_key       = ENV.fetch('SPARKPOST_API_KEY')
  c.sandbox       = true
end

The logs show an html email being sent:

2016-10-14T21:59:41.902213+00:00 app[web.1]: Sent mail to dinshaw.gobhai@endurance.com (459.2ms)
2016-10-14T21:59:41.902218+00:00 app[web.1]: Date: Fri, 14 Oct 2016 21:59:41 +0000
2016-10-14T21:59:41.902218+00:00 app[web.1]: From: no-reply@sparkpostbox.com
2016-10-14T21:59:41.902221+00:00 app[web.1]: Reply-To: no-reply@sparkpostbox.com
2016-10-14T21:59:41.902222+00:00 app[web.1]: To: dinshaw.gobhai@endurance.com
2016-10-14T21:59:41.902222+00:00 app[web.1]: Message-ID: <5801554d6cf2f_33fb7085b62e8549db@3c07599c-3ddb-40b8-b22c-31d4017fade2.mail>
2016-10-14T21:59:41.902223+00:00 app[web.1]: Subject: Reset password instructions
2016-10-14T21:59:41.902224+00:00 app[web.1]: Mime-Version: 1.0
2016-10-14T21:59:41.902224+00:00 app[web.1]: Content-Type: text/html;
2016-10-14T21:59:41.902225+00:00 app[web.1]:  charset=UTF-8
2016-10-14T21:59:41.902225+00:00 app[web.1]: Content-Transfer-Encoding: 7bit
2016-10-14T21:59:41.902226+00:00 app[web.1]: 
2016-10-14T21:59:41.902226+00:00 app[web.1]: <p>Hello 
...

But the email that comes across is plain text with html tags still in it:

Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset="UTF-8"
To: real@email.com
Date: Fri, 14 Oct 2016 21:59:41 +0000
Message-ID: <5801554d6cf2f_33fb7085b62e8549db@3c07599c-3ddb-40b8-b22c-31d4017fade2.mail>
From: no-reply@sparkpostbox.com
MIME-Version: 1.0
...
<p>Hello!</p>

<p>Someone has requested a link to change your password. You can do this through the link below.</p>

<p><a href="http://sparkpostbox.com/users/password/edit?reset_password_token=foo">Change my password</a></p>

[dgobhai]

The issue with the configuration file is:

  def self.configure
    self.configuration ||= Configuration.new
    yield(configuration)
  end

except .configure is never called, unless you add a configuration file - which the docs say is not needed. Not sure what you'd like to change: code or docs.

[nullcrimson]

The same issue for me, any workarounds?

[AfolabiOlaoluwa]

Team please respond to to this. Same with me.

[johnjansen]

include both a text and html template and things should all work just fine

[webzorg]

So, just add this to the initializer

SparkPostRails.configure do |c|
  ...
  c.html_content_only = true
end