SenderID towards all Japan networks:
- Alphanumeric Sender IDs are supported
- Numeric Sender IDs will be changed to randomised numeric sender IDs or "SMS" as a generic sender ID to ensure delivery.
SenderID with operators name are restricted: KDDI, Softbank, NTT, Rakuten Mobile
Any SenderID starts with UQ (including Uq, uQ, and uq) are restricted towards KDDI
Gambling related content are not supported towards Japan all networks.
Messages classified as illegal by the local networks are either discarded completely or the part of the illegal content will be removed.
Japanese characters unicode SMS are supported, and for other languages it depends on the handsets.
Concatenated messages are supported to all networks.
Network level delivery receipts are supported.