Home / SMS Firewall / Content & template rules
Read every message. Apply your rules.
Filter SMS by keywords, patterns and registered templates, then let AI confirm the verdict. Spam and scams are stopped before delivery, in under 50 ms.
Your account is locked. Verify to avoid closure.
Every verdict logged and reversible
Illustrative messages
Most SMS fraud follows a pattern someone can already describe.
Content and template rules turn what you already know about spam and scams into policy that runs on every message, with AI covering what the rules can’t yet describe.
Say what to look for, once.
Match words and phrases, link patterns and disguised text. Shortened URLs are expanded, and character swaps like “h0ld” no longer slip past a filter.
Congratulations! You have been selected. Claim now to receive your reward.
Parcel held. Pay £1.99 at bit.ly/p4rcel to release it.
Ur p@ckage is on h0ld, settle the fee today.
Illustrative rules and messages
A message either fits the template, or it doesn’t.
Registered templates describe what a legitimate message looks like, with slots for the parts that change. A message that fits passes cleanly. One that adds something extra stands out at once.
- Fixed text, variable slots
- Anything extra is flagged
- Pairs with your DLT registration
Illustrative template
Rules catch the known. AI reads the rest.
AI reads every message body and classifies it as transactional, promotional, conversational or fraudulent before delivery. It works alongside your rules, and language models recognise scam copy even when the wording changes.
Claim your prize now: bit.ly/3xK9a
Illustrative classifications
A verdict in under 50 ms.
Rules run on passive taps that mirror SMPP and SS7 traffic, so nothing in your routing changes. Legitimate traffic is untouched, and each decision completes in under 50 ms end to end.
- Passive taps, no routing change
- Zero impact on legitimate traffic
- Allow, block or flag every message
- 1Tapsubmit_sm captured on a passive tap0 ms
- 2ValidateSender, origin network and reputation4 ms
- 3AnalyseRules and AI score the text and links18 ms
- 4ActAllow, block or flag. Logged, reversible31 ms
Illustrative trace
Let the good through. Slow the rest.
Allow-lists let trusted senders pass cleanly, while bursts from unknown sources get throttled. Your own rules decide who is which.
Illustrative senders
- v11Added keyword group “parcel fee”Roll back
- v12New pattern: shortened URLsLive
- v13Template OTP-12 tightenedRoll back
Illustrative policy
Edit the policy without the fear.
Rules live in versioned policy, so you always know which version made a decision. Every verdict is logged and reversible, and a flagged message is held for review, so a mistake can be undone instead of lost.
- Versioned policy, rolled back in a click
- Every verdict logged and reversible
- Flagged messages held for review
Rules that sit inside the firewall.
Content & template rules, answered.
They are rules that inspect the text of each SMS, using keywords, patterns and registered templates, to allow, block or flag it.
Rules catch known patterns instantly, while AI classifies each message as transactional, promotional, conversational or fraudulent. Both feed the verdict.
No. They run on passive taps with zero impact on legitimate traffic, and each decision completes in under 50 ms end to end.
It is held for review. Every verdict is logged and reversible, so a flagged message can still be released.
Yes. Allow-lists let trusted senders pass cleanly, while bursts from unknown sources are rate limited.
Write the rule once. Stop it everywhere.
Talk to us about content and template rules for your SMS traffic.