Confirmation E-Mail not sent

[danielbrendel]

Describe the bug
Trefle sign up confirmation e-mail is not sent. However this is mandatory in order to obtain an API key.

To Reproduce
Steps to reproduce the behavior:

1. Go to Trefle IO
2. Sign up
3. Wait until infinity for a confirmation-email

Expected behavior
Get confirmation e-mail in order to complete registration and obtain API key