Your ceiling is your registration and reputation, not your ambition. Carriers meter how fast you can send based on your 10DLC brand/campaign trust tier and your sender reputation. Register properly and build a clean reputation and your throughput supports real campaign volume; skip it and you'll be throttled to a trickle.
What sets the limit
Your 10DLC registration tier (which depends on brand vetting), your sender reputation, and the number type you send from. Higher trust means higher messages-per-second and fewer filtered messages. It's earned, not purchased.
Volume isn't the only constraint
Even at high throughput, you can only send within quiet hours for each recipient, and only to people who opted in. A big list sent fast but non-compliantly delivers worse than a smaller list sent clean.
Frequently asked questions
How many texts can a campaign send per day?
It depends on your 10DLC trust tier, sender reputation, and number type, not a fixed number. Registered, reputable senders get high throughput; unregistered traffic is throttled.
How do I increase my texting throughput?
Complete and vet your 10DLC registration, build a clean sender reputation (consent, honored opt-outs, low complaints), and use an appropriate number type.
Informational, not legal advice.
Keep reading: Can a campaign text without 10DLC registration and Why political texts get filtered.