Referbi

pros:
- Quick campaign setup
- Your own email
- Has its own api, (configuring, hopefully it will work, should add more instructions)

cons:
- Many shared templates after creating a campaign are distracting, not knowing what to choose
- Email templates are inherently good, but they are limited because there is no room to set up separate settings for each campaign, if I want the campaigns to have different languages.
- There is no place to set the actual percentage for referers.
- Roadmap is not public.