Questions and answers
Here you will find questions about delivery, channel rules, pricing and setup. If your question is not listed, contact us using the form.
Contact a specialistChannels and messages
What is ACE SEND and how does it work?+
ACE SEND is an SMS and WhatsApp service for businesses. We send marketing and informational SMS, including one-time OTP codes, and bulk promotional messages on WhatsApp.
What types of messages can you send through ACE SEND?+
Promotional campaigns
Deposits, live odds, free spins, tournaments and VIP campaigns.
Informational SMS
Order confirmations, delivery updates and reminders.
OTP and 2FA via SMS
Verification of registration, login, withdrawals and identity.
Which industries does ACE SEND work with?+
Any company that needs OTP, informational messages or marketing campaigns.
How do marketing SMS messages differ from SMS messages containing OTP codes?+
Marketing SMS messages are used for promotion and customer engagement and are sent to a selected segment of the customer database. SMS messages containing OTP include a one-time code for identity verification or two-factor authentication. These are individual messages with a short code validity period.
How many characters fit in a single SMS?+
A standard SMS using GSM-7 encoding holds 160 characters. Characters outside this alphabet, such as most emoji, change the encoding to UCS-2 and reduce the limit to 70 characters.
How can I bring inactive customers back?+
Customers who have been inactive for 30, 60 and 90 days are offered increasingly strong incentives: a gentle reminder on day 30, a more substantial offer on day 60 and the strongest offer on day 90 — before considering the customer lost.
SMS API and integrations
Which CRM platforms and systems can be connected?+
Any CRM platform or proprietary messaging system that can call the API can trigger SMS sending.
Segmentation and workflows stay in your system. We handle delivery.
How do the API and webhooks work?+
Your system sends messages through the HTTP API.
ACE SEND returns delivery confirmations to your system through webhooks. The same interface is used for promotional messages and OTP.
How do I connect ACE SEND to my system?+
Your system sends messages through the HTTP API.
What is a DLR webhook?+
A DLR webhook sends the delivery status to your system: what happened to each message.
Can ACE SEND run alongside my current SMS provider?+
Yes. You can start with a portion of your traffic: connect ACE SEND through the HTTP API alongside your current provider and compare delivery before switching.
Delivery and routes
What delivery quality can I expect?+
We provide a realistic estimate for a specific route rather than a single overall figure: delivery depends on the destination country, channel and sender type.
Delivery statuses and reports
A delivery confirmation is returned for each message.
How is message deliverability measured?+
Using delivery confirmations for each message.
What is a DLR and why is it needed?+
A DLR (Delivery Receipt) is a delivery confirmation returned by the operator. It forms the basis for assessing deliverability. A deviation from typical figures may indicate problems with the phone number database or route and requires investigation.
Can I use an alphabetic SMS sender ID?+
Yes, if this is permitted in the destination country. Rules vary: some countries require prior registration, while others allow only numeric sender IDs. We discuss the available options when selecting routes.
Pricing and setup
How is pricing determined?+
Pricing depends on the destination country and messaging channel.
Specify the countries, expected volumes and use cases: promotional campaigns, OTP or both message types. We will prepare a proposal covering routes and rates for each channel.
Are availability SLA commitments and on-call coverage provided for peak days?+
Formal commitments on availability, response times and support during peak periods are agreed individually with enterprise clients.
Do longer SMS cost more?+
Yes. If text using GSM-7 encoding exceeds 160 characters, the message is split into linked parts. Each part is usually charged separately.
OTP and 2FA via SMS
What actions is OTP used for?+
Verification of registration, login, withdrawals and identity.
- Two-factor authentication at login.
- One-time code at registration.
- Verification code for withdrawals.
What is SMS OTP?+
SMS OTP (One-Time Password) is a message used for identity verification and user authentication. It contains a one-time code with a limited validity period to verify identity, confirm transactions or access online services.
Can promotional messages and OTP be sent through the same API?+
Yes. Promotional messages and OTP use the same HTTP API. Delivery confirmations are returned through webhooks.
How can I test OTP delivery?+
Specify the countries and monthly volume of messages containing verification codes. Routes and rates are calculated separately for each country.
Why can OTP be difficult to deliver?+
Carrier filters that block promotional messages often also block login codes.
We select an SMS route for the country and messaging use case. We take available sender IDs and registration requirements into account.
During an agreed test, we check delivery, latency and the return of statuses. If you already use another provider, you can compare results on a portion of your traffic.
We return delivery confirmations through webhooks. If a technical issue occurs, we investigate the specific message using its ID.
Support and troubleshooting
How can I contact ACE SEND support?+
The team is ready to help with any question or issue.
Contact a specialistWhat should I do if there is a technical issue?+
If the issue persists, contact support and provide the campaign or message ID. This significantly speeds up diagnosis.
Contact us
Specify the countries, monthly volume and channels you need. We will prepare a proposal covering routes and pricing.