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My texts won't send

United States and toll-free numbers: the registrations most often missing.

Role : EveryoneDuration : 3 minOn : Web, Mac

Before you start

  • Your Callizy account.
  • To register: be a manager.

Step by step

6 steps, about 3 min
  1. 1

    Read the warning

    10 s

    Above the text box, before you even type, Callizy warns you when a text can’t go out from this number. The Trust center link leads to the missing registration.

  2. 2

    To Canada, from a local number

    10 s

    Nothing to do: it works right away.

  3. 3

    To the United States, from a local number

    1 min

    Carriers require your business and your texts to be registered. In Administration, Settings, Trust center, section Texting US numbers: Your business (brand) and Your texts (campaign) must be Approved. Nothing goes out until the campaign is approved.

    Administration/Settings/Trust center

    Open this screen in Callizy
  4. 4

    From a toll-free number

    30 s

    Each toll-free number has its own application, free of charge, to text Canada as well as the United States. In Toll-free numbers, click Enable texting. Carriers answer within days, sometimes weeks.

  5. 5

    Follow the status

    10 s

    Each application is To do, Under review, Approved or Rejected. Rejected: the reason shows. Fix it, then Resubmit.

  6. 6

    Read the error message

    10 s

    Everything is approved and the text still won’t go? The message says why: a landline, an invalid number, a customer who unsubscribed. The causes are below.

Key points

  • From a local number, texting Canada works right away.
  • To the United States from a local number: your business and your texts must be registered.
  • A toll-free number only texts once its application is approved.

Not working?

Callizy shows “Texting a US number from a local number requires a carrier registration. Do it in the Trust center.”
  1. Your manager fills in Texting US numbers, in the Trust center.
  2. See Texts to the United States and from a toll-free number.
Callizy shows “This toll-free number is not yet verified for texting. Enable texting from the Numbers page.”
  1. Your manager clicks Enable texting on this toll-free number, in Numbers or in the Trust center.
  2. Status Under review? Nothing goes out until approval.
Callizy shows “This recipient has unsubscribed from your messages.”
  1. The customer asked to stop getting your texts: call them instead. See Texts and CASL.
Callizy shows “This number can’t receive text messages.”
  1. It’s often a landline: call instead.
Callizy shows “Invalid destination number.”
  1. Check the number: 10 digits for Canada and the United States, area code included.
Callizy shows “This number is your own line: you can’t text yourself.”
  1. The recipient is one of your company’s numbers: text another number.
Callizy shows “Sending messages to this region isn’t enabled.”
  1. The recipient’s country isn’t open to texts: contact support.
Callizy shows “Message too long (max 1,600 characters)”
  1. Split the message into two texts.
Callizy says “file too large”
  1. Images and audio: 5 MB max. Videos and PDFs: 75 MB max; too heavy for a text, they go out as a link.
  2. Up to 10 files per text.
Callizy shows “The text did not go out.”
  1. Try again in a moment.
  2. Still not? Check that the subscription is active: see Manage your subscription and invoices. Otherwise, contact support.

Frequently asked questions

Are texts limited?
No, not the ones you type in Callizy. Only automated sends, through the API or Zapier for example, have a cap, shown in Billing.
Does US registration cost anything?
Carrier fees would apply, passed through at cost: the amount shows in the Trust center. A toll-free application is free.
Does my local number text Canada without registering?
Yes, right away.

Updated October 29, 2026

PreviousCall quality, microphone and headphonesNext The AI agent doesn't answer or gets it wrong

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