What types of messages can I send with a TFN?
TFNs are designed for business messaging. You can use them for:
Transactional messages: Appointment reminders, shipping updates, order confirmations, and alerts.
Customer service: Automated or live replies that help customers manage their accounts or resolve issues.
Marketing: Promotions, product launches, sales, loyalty updates, and other campaigns — as long as customers have opted in.
What’s not allowed?
You can’t use TFNs for personal communication or anything considered spammy or high-risk. Examples of disallowed or restricted content include:
Unsolicited marketing (no opt-in)
Personal or non-business messages
High-risk financial services, loans, debt relief
Alcohol, tobacco, cannabis, or drug-related content
Gambling, sweepstakes, or get-rich-quick schemes
Adult content or hate speech
Firearms and explosives
To learn more about what kinds of messages you can't send, see our sending guidelines. Check out our global sending guides for more information about sending in the US and Canada.
Do I need customer consent?
Yes — opt-in is required. You must show how your recipients have agreed to receive messages from you. This is known as “explicit consent.”
Common opt-in methods include:
A form on your website with an unticked checkbox
A customer texting you a keyword (e.g. JOIN)
A signed paper form
Verbal opt-in with documented scripts
Carriers expect to see proof of opt-in during registration. If you can’t provide it, your application will be rejected.
What if I break the rules?
If your messages contain restricted content, don’t match your declared use case, or lack proper consent, your TFN may be blocked or your registration rejected. For a smooth registration process, it's important that you:
Are honest about your use case
Keep opt-in records up to date
Avoid sending messages outside your approved scope
When in doubt, ask our support team to review your registration before submitting.