Install error when using composer

[pinkp]

I get the following error when installing using composer:

[InvalidArgumentException]                                                                    
  Could not find package markguinn/silverstripe-email-helpers in a version matching dev-master

Can you help? I really need to set up SMTP mailing for user forms.

Thanks

[rasstislav]

I have the same problem.

[pinkp]

Any work around? I just need to get my userforms sending securely as they wont at the moment. Very frustrating.