i use push notification alot and this seem a good alternative but...

Pushworld have some cool stuff but they need to improve alot
- Cannot import suscribers (¿how gonna migrate?)
- Cannot view old messeges
- Cannot view user
- The stats or analitics seem not work properly
- The interface is not fully working
- No fully traslate on english
- No bulk upload or other way like zapier

I can continue, but is not point.

Good things:
- I like they add schedule (no test it)
- easy install, but no wp plugin
- Rss integration (no test it)

Yes, pushworld work... but need more work.