As you use Xoxzo APIs, do you have any worries or wishes if something could be done in this way, etc? We Xoxzo are always looking at the upgrading of our service, with the base philosophy of Keizoku Kaizen.

For example, our K-premium service has been evolving from time to time with continuous improvement. This is an optional service that can be applied to the sending directly to the Japanese domestic carriers.

The service was introduced originally in July 2013, to set direct sending to one of the Japanese carrier au(KDDI). As there are a lot of restrictions by carriers and increasing MNPs, some SMS experienced difficulties in delivery, set SenderID was replaced to be displayed on the recipients' device. K-premium service avoided these.


This is a very popular optional service, it so succeeded to Xoxzo when it is released in September 2015. Not stopping there but being improved K-premium version 2 (KP-V2) was released in December 2017, with all Japanese Domestic carrier involved. As being said, this KP-V2 can set direct sending to more carriers than only au(KDDI).

We listen to our users. Some users voice arose to still use the old type K-premium as well. K-premium lite is released June 2018, now we have a selection of this optional service, whether you use Full with KP-V2, Only au(KDDI) with K-premium Lite or do not use (Standard sending).

Very easy to select these, we have parameters jp_kp for KP-V2 and simple jp_kpl could be using K-premium Lite. How easy is that!!

Now you have seen how our service is being evolved, including we listen to our users. Please do not hesitate to contact us with your ""Wishes"" on the helpdesk (

Aiko Yokoyama

Aiko Yokoyama

Customer Success and Operations

Joined January 2014. Experienced as a clerk in Foreign Trading company, started and maintained an online supplement store. Lived in overseas for 15 years. Looking forward to communicating our customers with the broad view based on those experience.