SMS Country regulations and restrictions
Japan
Before you start sending SMS messages to Japan, please ensure that you understand the regulations around messaging in the country. All programs are required to be compliant with the applicable laws. Please contact our Support team if you are unsure about any of these regulations.
| Description | Restriction |
| DND exists | No. |
|
Time restrictions |
No - but it is advisable to use daytime hours for marketing. |
|
International vs local split |
Yes – International gateway (no registration) vs Domestic gateway (registration required). |
|
Local traffic |
Sender ID registration is required for domestic traffic. |
|
International traffic |
No registration needed; dynamic sender ID supported. |
|
General content restrictions |
No political, religious, gambling, adult, loan, or unsolicited promotional content; URLs forbidden; P2P prohibited. |
|
Content registration required |
No formal registration, but provider policies may apply. |
|
Opt-out instructions required |
Yes; explicit opt-in needed, and opt-out handling must be enabled. |
|
Sender ID regulations |
Dynamic alpha sender ID is allowed for international brands.
|
| Country supports MNP |
Yes. |
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