Privacy policy
Last updated November 6, 2026
Sonaline is a business texting and calling service. A business (a workspace) signs up, and its staff use Sonaline to text and call the business's customers. This page explains what information Sonaline handles, why, and what control you have over it.
Sonaline is a product of YB Tech Solutions Inc, 137 Clinton Ln Apt 4, Spring Valley, NY 10977 ("Sonaline", "we", "us"). Using Sonaline is also governed by our Terms of service.
Who is responsible for what
For the conversations a workspace has with its customers, the business that owns the workspace decides what is sent and kept; Sonaline processes that information on its behalf. For the accounts of the people who sign in, and for this website, Sonaline is responsible.
What we collect
- Account details: the name, email address and phone number of each person with an account, and how they sign in: a password (stored only as a salted hash), passkeys, an authenticator-app secret, or a Google or Microsoft account.
- Messages: the texts, pictures and voice notes sent and received through a workspace's numbers, the phone numbers involved, and when they were sent, along with the notes, assignments and saved replies staff add.
- Mobile numbers you verify: if you add your own mobile number so calls you place from it through your carrier are recognised as yours, we keep that number on your account, marked verified once you type the code we text to it, until you remove it.
- Calls: call history (numbers, times and durations), voicemail, and recordings where a workspace uses them, with their transcripts and summaries.
- Contacts: the names and numbers a workspace saves in its contact book, including any brought in from Google Contacts (below).
- Devices: the devices signed in to your account, push-notification tokens so the app can alert you to a new message or call, and, if you turn it on, a phone's diagnostic log and crash reports.
- Service logs: the address a request came from, which page or API it asked for, and whether it succeeded, used to keep the service running and secure.
How we use it
Only to provide the service: delivering messages and calls, showing a workspace its own conversations, sending notifications, keeping accounts secure, preventing abuse and runaway spending, and billing the workspace. We do not sell personal information, we do not use it for advertising, and we do not build profiles of the people a workspace texts.
Some features are done by automated speech and language services: writing out voicemail and recorded calls as text, summarising a recorded call, writing out a voice note, and suggesting a reply. Voicemail is written out when it arrives; the others run when someone asks for them. These services are provided partly by the cloud platform Sonaline runs on and partly by a specialist speech-transcription provider, and Sonaline sends them the audio or text only to get that work done.
Texts from Sonaline
Texts from Sonaline is the program under which Sonaline texts the people who use the Sonaline app from Sonaline's own number: verification codes, and, only for those who turn them on, account, security, fraud and support messages. That number never sends marketing, and it texts only a mobile number the person entered and verified themselves. There are two separate opt-ins, and the second can be given in three places: on the public form at sonaline.com/sms, on the public sign-up form, or with a switch in the app.
- Verification codes: in the Sonaline app (on the web at sonaline.app, or on Android), under Settings, Carrier calling, Add a phone number, you enter your mobile number and press Send code. Before you press it you see: "Sonaline will text a verification code to this number, one message per request. Msg & data rates may apply. Reply STOP to opt out, HELP for help.", with links to this Privacy policy and the Terms of service. Pressing Send code is your consent to receive that code by text message.
- Account, security, fraud and support messages: in Settings, Notifications, under Texts from Sonaline, there is a switch that is off until you turn it on yourself. It can be turned on only for a mobile number you have already verified with a code, and beside it you see: "Text me account, security, fraud and support messages from Sonaline. Msg frequency varies. Msg & data rates may apply. Reply STOP to opt out, HELP for help.", with links to this Privacy policy and the Terms of service. Turning the switch on is your consent to receive these messages at that number; we keep the words you agreed to, when, and the address you agreed from. Turning it off withdraws it.
- On sonaline.com/sms: the form at sonaline.com/sms needs no account. It has a Mobile number field and a checkbox, never ticked for you, that reads: "Text me account, security, fraud and support messages from Sonaline. Msg frequency varies. Msg & data rates may apply. Reply STOP to opt out, HELP for help.", with links to this Privacy policy and the Terms of service and the line "Not a condition of purchase." Pressing Text me a code texts one code to that number: "Sonaline: your code to confirm texts from Sonaline is 482913. It expires in 10 minutes. Reply STOP to opt out." We keep only a scrambled form (a hash) of the code, for 10 minutes. Entering the code on the page and pressing Confirm is your consent; we then keep the number, the words you agreed to, when, and the address you agreed from, and send one confirmation text: "Sonaline: You're signed up for account, security, fraud & support texts. Msg frequency varies. Msg & data rates may apply. Reply HELP for help, STOP to opt out." Nothing else is sent on it until the number is verified in a Sonaline account, where it becomes that account holder's opt-in. Replying STOP deletes it.
- On the sign-up form: the form at sonaline.app/signup, where a business starts Sonaline, has an optional Mobile number field and a checkbox that is never ticked for you and is not required to sign up. Beside it you see: "Text me account, security, fraud and support messages from Sonaline. Msg frequency varies. Msg & data rates may apply. Reply STOP to opt out, HELP for help.", with links to this Privacy policy and the Terms of service, and the line "Optional. Not required to sign up. We text this number only after you verify it in the app." If you tick it, we keep the mobile number you entered, the words you agreed to, when, and the address you agreed from; if you leave it unticked, we do not keep the number at all. Nothing is texted to that number until you verify it in the app with a code (Settings, Carrier calling); once you do, these messages start at that number. A number that replied STOP is never started.
- Neither opt-in is a condition of buying anything.
Examples of each kind of message:
- Verification code: "Sonaline: your verification code is 482913. It expires in 10 minutes."
- Account notification: "Sonaline: The card on file for your workspace was declined. Update it in Settings > Billing to keep your service running. Reply STOP to opt out."
- Security alert: "Sonaline: A new device signed in to your account (Chrome on Windows). If this wasn't you, change your password in Settings > Security. Reply STOP to opt out."
- Fraud alert: "Sonaline: We paused international calling on your workspace after unusual activity. Review it in Settings > Security. Reply HELP for help, STOP to opt out."
- Customer care: "Sonaline Support: Thanks for reaching out. Your new number is set up and ready to text. Reply here if you need anything else. Reply STOP to opt out."
- How often: verification codes, one message each time you ask for a code, limited per person, per phone number and per day. Account, security, fraud and support messages: message frequency varies.
- Cost: message and data rates may apply.
- Opt-out: reply STOP (or STOPALL, UNSUBSCRIBE, CANCEL, END or QUIT) and you will get no more messages from Sonaline at that number, and the switch in Settings is turned off. Reply START to receive verification codes again; account, security, fraud and support messages start again only if you turn the switch back on.
- Help: reply HELP, or contact us at hello@sonaline.com or (845) 608-1220.
- Carriers are not liable for delayed or undelivered messages.
We keep a log of the texts Sonaline's number sends, for up to 90 days, so we can tell whether a message was delivered. The log never holds a code itself and shows the phone number by its last four digits only. A number that replied STOP is kept so that it is not texted again.
Mobile information will not be shared with third parties or affiliates for marketing or promotional purposes. Text messaging originator opt-in data and consent will not be shared with any third parties. This applies to every text Sonaline sends, including the messages above and the texts a workspace sends through Sonaline.
Signing in with Google or Microsoft, and Google Contacts
If you sign in with Google, we receive your name, email address and profile picture from Google and use the verified email address only to find and open your existing Sonaline account.
If you sign in with Microsoft, we receive your name, email address and an account identifier from Microsoft and use them only to find and open your existing Sonaline account.
If you choose to connect Google Contacts, Sonaline reads your Google contacts' names, phone numbers and organisations so they appear in your workspace's contact book and stay up to date, and writes a contact's name and organisation back to your Google account when someone in your workspace saves or edits it. Sonaline never changes a Google contact's phone numbers, never copies your team's internal notes to Google, and never deletes anything from your Google account. The access Google grants is stored encrypted, and you can disconnect at any time from the app's settings, which revokes it at Google and, if you ask, removes the contacts it brought in.
Sonaline's use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements. Google user data is used only to provide the features described above, is not shared except as needed to provide them, and is never used for advertising or to train AI models.
Who we share it with
Only the service providers needed to run Sonaline, and only for that purpose. We do not sell or rent personal information, and none of these providers may use it for its own marketing:
- Cloudflare, our cloud hosting provider, which runs the service, holds its databases and files, sends its email notifications, relays the audio of calls made in a browser when a direct connection is not possible, and runs the speech-to-text and language models used for voice notes, call summaries and reply suggestions.
- Wasabi, our off-site backup storage provider, which holds encrypted copies of the databases and files so they can be restored after a failure. The copies are encrypted before they leave Cloudflare, and Wasabi cannot read them.
- Telephone carriers and messaging providers, such as Bandwidth and Skyetel, and the messaging partner some workspaces text through, which must carry a text or call to be able to deliver it. Verification codes are sent through Bandwidth.
- YiddishLabs, a speech-transcription provider, which writes out voicemail and recorded calls, and translates call summaries into Yiddish.
- Our payment processor (Stripe), which takes the card payment when a business signs up and bills its plan. Card details go to Stripe directly and never reach Sonaline.
- Sign-in providers you choose to use (Google, Microsoft), for signing in.
- Push-notification services (Google's Firebase Cloud Messaging on Android, Apple's push service on iPhone, and the one your browser uses), to deliver notifications. A message notification carries a signal to look for something new, not the message itself. A call notification carries the caller's number and name, so your phone can ring and show who is calling.
- Systems a workspace connects, such as its CRM or its phone system, which receive the workspace's own messages and calls because the workspace set them up to, and a workspace's previous texting provider, when the workspace asks us to bring its history over.
We may also disclose information when the law requires it.
How long we keep it
Each workspace sets how long its messages are kept; older messages, their attachments and related notes are deleted automatically every night. Each workspace can also set how long its calls, recordings and voicemail are kept; older ones are deleted automatically. Signed-out sessions, expired sign-in links and push tokens for devices that are no longer signed in are cleared on the same schedule. The log of texts from Sonaline's number is kept for 90 days. Your consent to account, security, fraud and support messages is kept until you turn it off, reply STOP, remove that number, or your account is deleted. A mobile number you verified stays on your account until you remove it, which you can do at any time in Settings. When a workspace closes its account, its data is deleted: its records at once and its call history within a day, with stored files and encrypted backups following within about 30 days.
Security
All connections are encrypted. Passwords are stored only as hashes, secrets such as connected-account tokens are stored encrypted, and staff can protect their accounts with passkeys or an authenticator app.
Your choices
- If you text a Sonaline business number, reply STOP and that number will not text you again. Reply START to undo it.
- To see, correct or delete information a business holds about you, contact that business; we will help it respond.
- If you have a Sonaline account, you can change your details, remove a verified mobile number, sign out your devices and disconnect Google or Microsoft in the app. Your workspace's administrator can remove your account, or you can contact us to have it deleted.
- To stop texts from Sonaline, reply STOP to Sonaline's number. To stop only account, security, fraud and support messages, turn off the switch under Texts from Sonaline in Settings, Notifications.
Children
Sonaline is a service for businesses and is not directed at children under 13.
Changes
When this policy changes, we will update the date at the top of this page, and tell workspaces of any significant change before it takes effect.
Contact
Questions about this policy or your information: YB Tech Solutions Inc, 137 Clinton Ln Apt 4, Spring Valley, NY 10977, hello@sonaline.com, (845) 608-1220.