Choosing an SMS provider turns on sender identity, delivery reports, links and opt-outs - not on price per message. What to check, what to ask, and how to pilot.
Key takeaways
- A real delivery report is the difference between knowing a message arrived and hoping.
- A recognisable sender name raises open rates and reduces "who is this" replies.
- Opt-outs must be managed on your side, not only at the provider.
- SMS is an excellent operational channel and a sensitive marketing one - do not mix them.
Price per message is the easiest parameter to compare and the least important. What actually decides it is four things: what name appears on the recipient's phone, what comes back as a delivery report, how links are handled, and how an opt-out is recorded - because those are what cost you time and reputation.
What to check with every provider
| Check | What to ask | Why it matters |
|---|---|---|
| Sender name | Whether a named sender is available, and what approval needs | A recipient who does not recognise it deletes |
| Delivery report | Whether a real per-message status comes back | Without it there is no way to know what happened |
| Links | Whether shortening and tracking exist, and which domain shows | A foreign domain lowers trust and clicks |
| Opt-out | How it is recorded, and how it reaches you | An opt-out held only at the provider comes back to you |
| API and integration | What exists for your platform | Decides how much work is required |
| Support | In Hebrew, during your working hours | It matters on the day something fails to send |
Row four is the most neglected and the only one with legal and reputational consequences: a customer who asked to be removed and receives another message experiences a business that is ignoring them.
Why does a delivery report matter so much?
Without one, every send is an assumption. With one, you know three things that change decisions: which numbers are no longer valid and should be cleaned from the list, whether a failure was yours or the network's, and what the real delivery rate is - which is sometimes considerably lower than assumed.
It is worth confirming the status reflects delivery to a handset rather than only acceptance by the provider. The difference between those two is exactly the difference between a useful figure and a meaningless one.
Where SMS still wins
Even though WhatsApp is the channel that gets read in Israel, SMS retains three advantages: it reaches every handset without an app, it requires no pre-approved template, and it is read immediately - which makes it the right channel for a verification code, an urgent reminder, and anything that must arrive now.
For an ongoing conversation and for marketing content it suits less well. The full channel comparison is in SMS versus WhatsApp in Israel, and the practical conclusion in most businesses is to use both for different things.
What every message must contain
- Clear identification of the business, at the start.
- A reason - why the customer is receiving this now.
- One clear action, where one is needed.
- A way to opt out, on anything that is not operational.
- A link on a domain that looks like yours, where there is one.
The shortest message satisfying the first four is usually the most effective. A long message splits into parts, costs more, and is read less.
How to run a pilot
- Send 200-300 real messages through two providers in parallel, to the same kind of recipients.
- Compare delivery rates from the reports, not by impression.
- Check how the message looks on different handsets, including Hebrew with numbers.
- Check how quickly the delivery report arrives.
- Test opt-out - send a request and confirm it is recorded on your side too.
Point 3 surfaces common Hebrew faults: a phone number or order number appearing reversed inside a sentence, and a link broken by adjacent punctuation.
Managing opt-outs - the part you cannot skip
An opt-out should live in one place on your side that every channel checks before sending - SMS, email and WhatsApp. When each tool keeps its own list, a customer who unsubscribed from email still gets an SMS reminder, and that is precisely the experience that produces a complaint.
It is also worth separating an opt-out from marketing and operational messages they do want - order confirmation, delivery update, verification code. That separation preserves service without breaking their request, but it has to be explained: one message saying what they removed and what will still arrive prevents most misunderstandings.
Operational versus marketing - a separation that pays
The distinction is worth keeping at system level, not only at opt-out level. Operational messages - a verification code, an order confirmation, an appointment reminder - go to anyone who took an action, at any reasonable hour, with no extra content. Marketing messages go only to those who agreed, within defined hours, and with a way to opt out.
Mixing the two produces two bad outcomes: opt-out rates rise, and customers begin ignoring the operational messages as well. The second is the greater damage, because it degrades exactly the channel the business needs when something is urgent.
The simple way to keep them apart is technical: two separate sending routes, with different lists and separate reporting. That also lets you measure each properly, which is what tells you whether opt-outs come from the marketing or from something else entirely.
What to do with invalid numbers
Every list accumulates numbers that are no longer in use, and they cost money on every send while distorting the delivery rate. The simple practice is to mark a number that fails three times in a row as inactive and exclude it from sends - not delete it, so it can be recognised if the customer returns.
In businesses that skip this, the delivery rate declines gradually over years and the explanation is always blamed on the provider. In reality the list aged, and one clean-up puts the numbers back where they belong.
Sources
Frequently asked questions
What does SMS cost?
Pricing is set by volume and by agreement, so there is no list price to rely on. What is worth checking is the billing structure: whether there is a monthly minimum, whether a long message counts as two, and what happens to failed messages - some providers charge for them.
What is a sender name, and why does it matter?
It is what the recipient sees instead of a number. A recognised name raises the chance the message is read and reduces "who sent me this" replies, and it requires an approval process with the provider. Establish exactly what is needed and how long it takes before committing to a campaign.
Can we send from our own system?
Almost always yes, through the provider's API. What to check is whether a ready integration exists for your platform, because that is the difference between an hour's connection and a development project. The technical detail is in [Israeli SMS gateways compared](/blog/israeli-sms-gateways-compared).
How many marketing messages are too many?
There is no fixed number, but the opt-out rate answers it better than any rule of thumb: if it rises after a send, you sent too many or to people who were not expecting it. Measure it separately per message type to know exactly what caused it.
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About the author
Yehonatan Saadia
Freelance automation, web & MVP developer
I'm Yehonatan Saadia, a senior developer who builds business automation, custom websites, and MVPs for small and mid-sized companies across the US, Europe, and Israel. These guides come from real client work, not theory.
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