Free tool · Messaging
SMS content pre-check
Paste a draft to flag restricted content categories, public link shorteners and sender ID problems before the message goes out.
Your draft stays in your browser; nothing is uploaded.
An alphanumeric name or a number.
We list the rules we could verify. A topic with no verified rule is left out, not guessed. This is reference information, not legal advice; check the regulator link and the last-verified date.
What the check found
- Paste a draft to check it.
A clean result is not an approval: operators and regulators decide. This is not legal advice.
How this works and its limits
Runs in your browser: what you enter stays on your device and is never uploaded.
The check looks for wording in content categories that operators commonly restrict, for public link shorteners that filters often block, and for sender IDs that break common length and character rules.
Country-specific content bans appear once each country’s rules are verified against their source. A clean result is not an approval: operators and regulators decide. This is not legal advice.
Data sources and licences
Operator names, brands and codes shown here are public reference data compiled from national regulators and other public sources. Their appearance does not indicate any partnership, endorsement, agreement or connectivity between unicomam.com and the named operators. All trademarks belong to their owners. Data is provided “as is” with no warranty; verify against the official source before relying on it for routing, billing or compliance decisions.
Regulatory information is for reference only and is not legal advice; check the regulator link and the “last verified” date.
Why SMS content gets filtered
Operators filter business messaging to protect their subscribers from fraud and unwanted messages. They block or delay content that looks risky, whatever the sender intended. Messages that look like gambling, unlicensed lending, debt collection, phishing or unsolicited promotions are the most likely to be filtered, and some categories are banned outright in certain countries.
Filters look at more than words. Public link shorteners hide where a link leads and are a common phishing signal, so many filters block them; a link on the sender’s own domain is safer and builds trust. Urgent wording about suspended accounts, prizes or payments, combined with a link, is exactly the pattern filters are built to catch.
The sender ID matters too. An alphanumeric sender ID that is too long, uses characters some networks do not support or imitates a well-known brand can be rewritten or rejected, and in several countries a sender ID must be registered before it can be used. Numeric senders follow the numbering rules of each country.
Country rules add requirements beyond operator filtering. Some countries ban whole categories of promotional content, require the recipient’s prior consent and an opt-out instruction in marketing messages, or limit when such messages may be sent. These rules change, and the same content can pass in one country and be blocked in the next.
Checking a draft before you send reduces blocked traffic and complaints, but it is not an approval: operators and regulators decide what they accept, and filters change without notice. Test new templates on the route you use, keep a record of consent for marketing traffic and keep links on your own domain.
Our traffic policy applies the same rules: we carry verification codes, account and order notifications, and marketing to recipients who opted in, and we review sample content before a route goes live.