Quick answer
Yes. Operators block SMS that contain links, APK links or callback numbers that are not whitelisted on your DLT portal.
What to whitelist
- Website links, such as https://yourbrand.in/offer
- App download (APK) links
- Callback phone numbers, such as your support or toll-free number
How
- Log in to your DLT portal.
- Find the CTA (call to action) / URL whitelisting section.
- Add your domain or full URLs and your numbers, and link them to your templates as the portal asks.
Tips
- Use your own domain. Public link shorteners such as bit.ly are usually blocked.
- Keep the domain fixed in the template. Only the part after the domain should change.
- Check templates with the DLT template checker, which flags links and numbers to whitelist.
More questions
Do I need to whitelist every page of my website?
Usually you whitelist your domain or the URLs you use. Check your DLT portal for whether it needs the domain or full URLs.
Can I use bit.ly links in SMS?
Public link shorteners are usually blocked. Use your own whitelisted domain instead.
Do toll-free numbers need whitelisting?
Yes. Any callback number in an SMS, including toll-free numbers, should be whitelisted.
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