Acceptable use & anti-spam policy

Last updated: 9 November 2026

This policy is part of our Terms of use. It keeps Blast SMS trusted by the networks and by recipients, so everyone's messages keep getting delivered.

Consent

• Only message people who gave you their number and agreed to hear from you, or with whom you have an existing relationship that makes the message expected.
• Don't use bought, rented, scraped or shared lists.
• Honour opt-outs straight away. Add every number that replies STOP, or asks to stop, to your Blacklist. Blast SMS never sends to blacklisted numbers.

Promotional messages

• Identify yourself, usually through your sender ID.
• Include a free opt-out, for example "Reply STOP to opt out".
• Don't send between 8 pm and 8 am East Africa Time.
• Keep the frequency reasonable.

Never send

• Fraud, phishing, fake prize or "send money back" messages, or messages impersonating banks, Safaricom, government agencies or any other organisation
• Messages asking for PINs, passwords or one-time codes
• Illegal gambling, unlicensed lending, pyramid schemes or unlicensed financial products
• Adult content, hate speech, threats, harassment or incitement to violence
• Content about illegal drugs, weapons or counterfeit goods
• Malware, or links to it
• Political messages that break the Election Offences Act or IEBC guidelines
• Anything else that is illegal in Kenya or in the recipient's country

Sender IDs

Apply only for names you own or are authorised to use. Don't use a sender ID that suggests you are another brand.

API

Don't use the API to test random numbers, generate traffic just to probe the system, or get around rate limits.

What we do about breaches

Our team and the networks monitor traffic. If we see a breach, we may pause campaigns, block a sender ID, suspend the account or report it to the authorities. Units used on content that breaks this policy are not refunded. Repeat or serious breaches lead to account closure.

Report abuse

If you received a message sent through Blast SMS that breaks this policy, email hi@blastsms.site with the sender ID, the time and the message text.