Getting started
Sndiq is fully managed: we provide the numbers, the carrier connections, and the carrier registration. You bring your business details, your contacts, and your messages. Getting to your first send looks like this:
- Create your account and add your business details: legal name, tax identifier, address, website, and support contact.
- Describe your program: what you will send, how people opt in, and a few sample messages. We use this to file your registration.
- Wait for approval. Carriers review the registration. We tell you when it is approved or what they asked to change. Our A2P 10DLC guide explains what they look for.
- Import your contacts with their consent details.
- Write and send your first campaign, or schedule it.
You can prepare contacts and campaigns while registration is in review.
Numbers and registration
Do I need my own carrier account?
No. Sndiq provides the numbers and the carrier connections, and files your A2P 10DLC or toll-free registration for you. You never sign up with a carrier or registry yourself, and you cannot connect an outside carrier account.
Local number or toll-free?
Local numbers use A2P 10DLC registration and suit businesses that want a familiar local presence. Toll-free numbers use toll-free verification and suit national programs. Tell us about your program and we will recommend one.
Why was my registration returned?
Usually because something does not match: the legal name or tax identifier differs from official records, the website is not live, or the opt-in cannot be verified. We pass along exactly what the carriers flagged. The rejection checklist covers the common causes.
Contacts and consent
Who can I text?
Only people who agreed to receive texts from your business for this kind of message. Purchased, rented, or scraped lists are never allowed, and consent given to another business does not carry over. See our TCPA Compliance Policy.
What consent details should I import?
For each contact: when and where they opted in, and what they agreed to. If a carrier, a recipient, or a regulator asks, you need to be able to show it.
What happens to people who opted out?
They are suppressed for your workspace. Sndiq checks suppression before every send, so re-importing a list will not message someone who opted out. Only a documented new opt-in brings them back.
Sending campaigns
When will my messages go out?
Campaigns send right away or at the time you schedule. Ordinary campaign delivery is held to daytime hours in each recipient's local time, so a message scheduled late in the evening waits for the next permitted window. The quiet hours section has the details.
What is a message segment?
Carriers bill and deliver text messages in segments. A message using only the standard character set fits 160 characters in one segment; longer messages are split into segments of up to 153 characters each. A single emoji or special character switches the whole message to a different encoding, where a segment holds 70 characters, or 67 once split.
Can I send email too?
Yes. Sndiq sends both text messages and email, so a campaign can reach contacts on the channel they opted in to.
Delivery and statuses
How do I know a message arrived?
Each message carries a status that updates as carriers report back, from queued and sent through delivered or failed. Failed messages include the reason the carrier gave, when it gave one.
Why did a message fail?
Common causes are an invalid or disconnected number, a landline, a recipient who opted out, carrier filtering, or content that does not match the registered campaign. Carriers do not always share a reason, and delivery is never guaranteed.
How fast does Sndiq send?
As fast as the carriers allow for your registration, without going over their limits. Large campaigns are paced to stay within those limits, which protects your delivery.
Replies, HELP and STOP
Replies come back to your workspace. When a recipient sends STOP or another opt-out word, Sndiq records the opt-out automatically. HELP replies should tell people who you are and how to reach you. If someone asks to stop in their own words, such as "please don't text me," treat it as an opt-out too. The HELP and STOP guide has sample replies.
Agencies and client workspaces
Agencies manage each client in its own workspace, with its own registration, numbers, contacts, opt-outs, and reporting. Each client registers under its own legal business name, because carriers register the business named in the messages. Consent collected for one client never covers another. The agency is responsible for every workspace it manages, as our Terms of Service explain.
API and developers
Everything the dashboard does is available over the Sndiq API, so you can send from your own systems and skip the dashboard entirely. Messages sent through the API go through the same consent, suppression, and quiet-hour checks as campaigns sent from the dashboard.
Treat API keys like passwords: keep them out of client-side code and public repositories, and replace a key right away if you think it was exposed.
Billing
Charges are usage-based and can vary by destination, message segment, and carrier, along with any registration charges, as described in our Terms of Service. For billing questions, email [email protected].
Received a text you did not want?
Reply STOP to the number that texted you. If the messages continue, email [email protected] with the sending number, your number, the date, and a screenshot if you have one. We use that information to investigate and enforce our policies.
Contact support
Email [email protected]. For a delivery problem, include the sending number, the recipient number, and the time the message was sent, and we can trace it faster.

