Sinch Community

If you have forgotten your Sinch Dashboard password, click the Forgot password? link on the login page:     The Forgot Your Password dialog is displayed:     Enter your email address and click Continue. We will send you a link to your email address so you can reset your password.   If you encounter any other issues logging in, please contact Sinch Support. ... View more

The Developer Forum is your place to find answers, ask questions, share experiences with other Sinch developers and learn about Sinch products and services. The Developer forum is part of the wider Sinch Support Community, which comprises detailed support knowledgebases for each of the Sinch products and services. These knowledgebases contain a wide range of information, including: FAQ - answers to frequently asked questions Troubleshooting information User guides Compliance information Best Practices and more. The information within the community is freely accessible but if you register, the community also allows you to engage and share ideas and experiences.   ... View more

To support and enable prepay and online payments in Brazil, Sinch provides the Boleto Bancário payment method to all of our customers in Brazil alongside the credit card payment options. The Boleto Bancário payment amount includes local taxes.   A prefilled Boleto Bancário barcode must be requested by the user and can be emailed to the recipient, downloaded or printed. Only one active barcode is available, and payment must be made to create a new barcode. The Boleto barcode is cancelled by the bank if it has not been used to make payment after seven business days. After the cancellation, a new Boleto can be generated.   Whilst waiting for the Boleto payment to impact your account, if you need to update your available account credit sooner, you have the option to top-up by credit card.   Boleto Payments Process   Step 1 – Sign In If you are a new customer you need to upgrade your account to be able to use Sinch Services. For existing customers you can add credit to your account using Boleto payments. Step 2 - Add Credits Choose the top up amount. Tax is deducted on the available balance. Step 3 - Billing Details Update your billing details. Enter either your personal identification (CPF) or company number. Country is filled in based on the IP country. Step 4 - Payment Method Two options are available. Select the Boleto option. Step 5 – Make the Payment The Boleto Barcode is displayed. Use the barcode to complete payment. Successful payment notification is emailed within 3- 5 days.   Following the simple steps outlined below to upgrade your account:   Log in to the Sinch Customer Dashboard: Click the UPGRADE (or for existing customers the ADD CREDIT) button in the top bar. The Upgrade (or for existing customers the Add Credit) page is displayed: Select the amount of credit you would like to add to your account. You can select the predefined amounts of R$50, R$100, or R$250 or you can specify an amount of your own choice in the Custom amount field. Mastercard, Visa and Boleto are accepted payment methods. Note: The amount shown in the Summary section does not include local taxes which will be displayed on the next page. Click CONTINUE. You are then requested to confirm your Billing Information: Enter or your billing information as requested if you have not already done so or you can edit your existing billing information if required. Once you are satisfied your billing information is correct, click CONTINUE. The Payment method page is displayed: Select Boleto Bancario as your payment method. This will generate a Boleto barcode which you can then pay using your online bank or at an ATM. The Summary section shows the total amount that you must pay including the Local Taxes for Brazil. For details on Brazilian tax rates you can click the Tax rates for Brazil link. Click GENERATE BOLETO to confirm the payment. The Boleto barcode is generated: You will also receive an email from Sinch with details of the Boleto barcode. Use the barcode to complete your payment using your online bank or at an ATM. Notification of successful payment will be emailed to you within 3- 5 days. Whilst waiting for the Boleto payment to impact your account, if you need to update your available account credit sooner, you have the option to top-up by credit card. Click the Sinch logo in the top left corner of the page to return to the dashboard – then click the UPGRADE or ADD CREDIT button in the top bar to return to the payments page: Choose the amount you want to credit your account with and click CONTINUE. On the next page you can enter your credit card details to complete the payment. You will be redirected through Ayden to your credit card’s 3D security pages. Follow the on-screen instructions to complete your payment. Note: Credit card payments will be taken securely via Ayden and your information is protected by 256-bit SSL encryption. Once the payment has been processed a confirmation message will be displayed.   Notes: All payments are processed securely but availability of payment options differs by region and account type. First time payments are processed and checked manually, so it may take a couple of days before the upgrade is processed. Please keep an eye on your email in case an Account Manager reaches out to you with a request for more information.   Once your account has been successfully upgraded, your account balance will be credited by your chosen amount. You can keep track of your payments and view receipts on the Payment history page.   Related Content: Why is my upgrade taking so long to process? ... View more

Verified Numbers are numbers that have been validated by Sinch. The Sinch Customer Dashboard allows you to add a verified number, which is typically your own number or the number of trusted testers, to your account.   Using a verified number helps prevent others from using a number they don’t own by associating it with your account. It can also help prevent fraud during the registration process.   Click here to learn more about how you can get access to a complete range of carefully-tested phone numbers, to use with all your communication services from Sinch.   Learn more: How can I add a verified number to my account? ... View more

The character limit for one SMS is 160 characters. If you need to send a message longer than 160 characters, it is possible to send multiple SMS together, formed as a single, longer SMS; this is called a Concatenated SMS.   To join messages together to ensure they deliver as one, a 7-byte concatenation header is used at the beginning of each SMS. Since this header is within the message, it reduces the total size of each SMS to 153 characters each.   Please also be aware that if you are sending in Unicode, your character count per SMS lowers to 70 characters for a one-part message due to the fact that each UCS2 character requires 2 bytes. The 7-byte header for concatenated messages will also apply sending in excess of one message. As a result, a two-part Unicode message has a limit of 134 characters and a three-part Unicode message has a limit of 201 characters.   How will I be charged for Concatenated SMS   If you are sending concatenated SMS, you will be charged as follows: a one-part message will allow you to send up to 160 characters - you are charged for 1 message. a two-part message will allow you to send up to 306 characters - you are charged for 2 messages. a three-part message will allow you to send up to 459 characters - you are charged for 3 messages. and so on. Concatenated Message Issues If a user reports that the concatenated messages they are receiving on their mobile phones: appear as separate messages are being truncated have message parts missing. There are several reasons why a concatenated message (multi-part message) may not be correctly displayed on the handset: The MT message parts arrived in the wrong order, which the handset is unable to process and display correctly. The concatenated message is displayed as several separate text messages. This is usually due to the handset operating system, and its management process of the header information for each message part. The handset may be busy, and the MT message part delivery may be postponed, which may cause the order of the message parts to be delivered in the wrong order. The operating system on most handsets, manage this scenario and wait until all message parts have been received, and then proceed to re-construct the message in the correct order, displaying the MT message as one complete message. However, it is important to note that the order of the MT message part can change several times during transit, right up until the MT message part is delivered to the handset. This is due to routing technologies, load-balancing systems and re-try cycles, all of which have an impact on the delivery of the concatenated MT message.   Take a look at the Sinch SMS Product page to learn about Sinch's SMS products, or click here to sign up to our self-service portal and get started  and send your first message today!   ... View more

Sinch will not accept Transport Layer Security (TLS) 1.0 or TLS 1.1 versions for incoming SMTP connections to enforce use of TLS 1.2 or higher from 18-Oct-2023. TLS 1.2 provides strong protection for data sent between client and server. This is applicable to the unsubscribe notifications; if the recipient's ISP (like Gmail, Hotmail, Yahoo, etc.) or email Client (like Microsoft Outlook, Mozilla Thunderbird, Apple Mail, etc.) do not enable/use TLS 1.2 or higher, you will no longer receive unsubscribe notifications from 18-Oct-2023. ... View more

The table below lists some common SMS error codes with explanation of why they occur:   Error code Description Explanation 153 Absent Subscriber Subscriber handset not connected to the network. Likely turned off or outside the area of coverage. 150 Unknown Subscriber The MSISDN is not active with the carrier 300 Invalid Destination Address The MSISDN does not exist 310 Invalid Source Address The source address is not permitted. Refer to Country Information and local regulations 151 Call Barred Message rejected due to active barring by the end-user. 61 Destination blocked Account not permitted to reach the destination MSISDN 62 Keyword blocked A phrase or word in the body of the message has been caught in the anti-spam filter 255 Error, personal service barring, MT Personal Determined Barring Black List The end-user has opted out from receiving messages. Either all A2P messages or sender ID specific 212 Equipment not short message equipped The number cannot receive text messages, for example Data-SIMs 158 Memory capacity exceeded The handset does not have sufficient free memory to accept the SMS   ... View more