Unlimited SMS marketing does not exist in the way the phrase suggests. Every text crosses a carrier network that charges for it and limits how fast you can send, and every recipient has a limit on how many messages they will tolerate before opting out. What you can have is software with no cap on users or contacts and messaging billed as used, which is how the levelpartner.ai platform works. This article explains where the real limits sit, and how to plan volume so cost and deliverability stay predictable.
The three real limits
Carrier throughput
Carriers limit how many messages per second a number can send, and the limits depend on the number type and your registration. A registered business with a good record gets more throughput than a new or unregistered sender. A plan described as unlimited still runs into this ceiling.
Cost per message
Someone pays for every segment. Plans that advertise unlimited texting usually either charge a high fixed fee that assumes you will not use much, cap usage in the small print, or route messages in ways carriers distrust. Paying per message for what you actually send is the honest model.
Recipient patience
The limit that matters most is the one people forget. Every contact will accept a certain number of messages from you before they opt out. That number is lower for marketing than for reminders, and lower for strangers than for clients.
What unlimited should mean for you
What a growing company actually needs unlimited is everything except the messages: unlimited users so every salesperson can text from the CRM, unlimited contacts so you never delete history to stay under a tier, and unlimited workflows so every useful automation can exist. On the platform, the licence covers all of that, and usage is billed as used on top.
Before you start
- A rough monthly volume estimate by type: reminders, follow ups, campaigns, replies.
- Your registered numbers and the type of each one.
- Agreement on a maximum marketing frequency per contact.
- Access to the phone system settings to review messaging analytics.
How to plan and control volume
Start with an inventory: list every workflow that sends SMS, its trigger and its audience size, add your planned campaigns, and shorten any template that runs to two segments. For large bulk sends, use Drip Mode so batches respect carrier throughput. Then check the actual numbers each month in messaging analytics.
- Go to Settings.
- Click Phone System.
- Open the Messaging tab.
- Select Messaging Analytics.
- Set the date range and filters for the month.
- Click Sent, Delivered, Failed, Received or Opt-Out Rate for logs.
A rising opt-out rate or failure rate is the signal to cut frequency. Remove or shorten the workflows that send the most texts for the fewest replies, and keep a smart list of contacts who have already received your monthly marketing limit so campaigns can exclude them.
Suppose reminders and confirmations come to 900 texts, proposal follow-ups to 150, one monthly campaign to a consented segment to 1,400, and replies and conversations to around 600. That totals roughly 3,050 single-segment texts. If two templates currently run to two segments, shortening them could save several hundred segments a month. The volumes are assumptions; build the same table from your own workflows.
What this replaces
Planning by volume replaces the vague comfort of an unlimited plan and the surprise of a usage overage. It also replaces the habit of sending more because it seems free. When every send has a known cost and a measured result, weak messages are easy to spot and cut.
Time it takes
The first estimate takes an hour. A monthly review of fifteen minutes keeps it current.
The mistake most people make
Sending more because the plan allows it. Volume that exceeds what your list wants shows up as opt-outs and complaints, which reduce deliverability for everything you send, including reminders customers rely on. For the habits that protect deliverability, read practices that keep texts delivered.
Ignoring message length. A template that runs to 170 characters costs two segments every time it sends. Across a few thousand sends a month, that is a large and invisible overspend.
When high volume is justified
Volume is justified when every message is relevant to the person receiving it: reminders for their own appointments, replies to their own questions, follow ups on their own proposals. It is rarely justified for blanket promotions. For genuinely large sends, see running mass SMS marketing properly, and for keeping costs down, how to keep SMS marketing affordable. For deciding which messages deserve a place at all, read setting an SMS strategy by lifecycle stage.
Troubleshooting
Large sends trickle out over hours. Carrier throughput is limiting the number. This is normal. Start large sends earlier in the day.
Usage is higher than estimated. A workflow is looping or re-enrolling contacts. Check execution history for contacts entering the same workflow repeatedly.
Messages split unexpectedly. Special characters force a different encoding. Retype quotes and remove symbols.
Opt-outs rise as volume grows. Frequency per contact is too high. Exclude contacts who have reached your monthly limit from every marketing send.
Frequently asked questions
Is there any genuinely unlimited SMS plan?
No plan avoids carrier costs and throughput limits. Plans that advertise unlimited texting carry those costs somewhere, usually in a fixed fee or fair use terms.
How is texting billed on the platform?
The licence covers the software, users and contacts. SMS usage is billed as used on top.
How can I reduce texting costs without sending less?
Keep templates to one segment, remove duplicate sends across workflows, and use email for messages that do not need to be read today.
Does sending more texts improve results?
Only while each text is relevant. Past that point, more volume means more opt-outs and lower deliverability.