Bulk SMS sending lets you reach thousands of recipients with a single message faster than you can read this paragraph. The SMS-fly gateway sends up to 1000 messages per second, and rates start at 0.054 PLN per SMS – with no subscription and no minimum fees. You pay only for the messages sent, whether you run marketing campaigns or transactional SMS notifications.
SMS-fly was created by entrepreneurs who wanted to optimize communication processes.
Bulk SMS sending means delivering the same text message to a large group of recipients at once – from the browser panel, through the SMS API, or from an imported file. Instead of typing numbers manually, you upload a contact database and launch the send with a single click.
In practice, bulk SMS services handle three types of message:
Sending messages manually from a phone stops working at a few hundred numbers. There is no segmentation, no sender name, no delivery report – and with a larger database the process itself takes hours. Bulk SMS sending is the tool that takes this work off the team and turns it into a measurable process.
Bulk SMS sending for business works wherever the delivery time of a message matters and the recipient does not need internet access.
The SMS system is used primarily by:
Launching your first campaign takes a dozen or so minutes and requires no technical knowledge or programming.
Campaign effectiveness rarely depends on the content alone. It is decided by the set of features that let you reach the right person, at the right moment, under a recognisable sender. Below are five elements that make the biggest difference in bulk SMS communication.
An SMS with a sender field displays the company name in the header instead of a string of digits. The recipient immediately knows who is writing and does not need your number saved in their contacts.
The sender name raises the open rate and the credibility of the message. It matters especially in sensitive messages – payment information, an authorisation code, or a schedule change – where the recipient has to judge in a fraction of a second whether the message is genuine. You will find more about the configuration on the SMS branding page.
SMS personalisation means inserting a parameter into the template that the system automatically replaces with a specific recipient's data – first name, order number, amount, or appointment date.
One campaign then reaches the entire database, but every addressee receives a message that reads as if it were written to them. This is the simplest way to raise engagement without increasing the cost of the send. Personalisation works well in loyalty programmes, deadline reminders, and after-sales communication.
An SMS with a link takes the recipient straight to the product page, the cart, or a form. A shortened address saves characters and looks tidier than a full URL with parameters.
After adding UTM parameters, you will see campaign traffic in Google Analytics alongside your other sources. This way you measure campaign effectiveness not only by the number of deliveries, but also by clicks and conversions. Monitoring this data after every completed bulk SMS send lets you deliberately adjust the content, timing, and frequency of the next ones.
Templates are useful wherever messages repeat: in recurring campaigns, branch networks, and standard notifications. Instead of writing the content from scratch, you fill a ready-made pattern with current data.
Message scheduling gives you control over the timetable. A Black Friday campaign, a holiday promotion, or an event reminder can be prepared in advance and set for a specific hour – and the system sends it without your involvement.
The contact database is the foundation of every campaign. You can build it manually, import it periodically, or synchronise it with a CRM system.
SMS sending from a file supports the TXT, XLS, XLSX and CSV formats, so an export from almost any system can be used without conversion. Before starting a campaign it is worth tidying up the phone numbers: removing duplicates, fixing formats, and excluding contacts without marketing consent. Verifying phone numbers before an SMS send lowers the campaign cost and improves the delivery rate.
The same SMS system handles entirely different processes – from recovering abandoned carts to crisis messages in a municipality. Below are the three most common scenarios.
Bulk SMS in e-commerce works on two fronts. The first is customer service: order confirmation, dispatch notice, return notification. Messages arrive instantly and reduce the number of calls asking „where is my parcel”.
The second front is sales. In an online store, abandoned cart reminders with a link and a discount code work well, as do back-in-stock notifications and short campaigns during sales. A message with a time limit generates a reaction within minutes rather than days – which is why SMS can outperform email in flash sale campaigns. We described solutions for this industry in more detail on the SMS for online stores page.
In practices, salons and clinics, the biggest cost is no-show appointments. An automatic reminder sent the day before genuinely reduces the number of absences and keeps the schedule in order.
SMS also works well for sudden changes: a cancelled appointment, a shifted hour, or a stand-in specialist. The message reaches the patient regardless of whether they have mobile data switched on. You will find details in the healthcare and fashion and beauty sections.
In public administration, bulk SMS sending is an emergency and an organisational channel at the same time. Weather warnings, water supply interruptions, meeting dates, changes to the waste collection schedule – everything reaches the phone, without the intermediary of an app or social media.
For schools and housing communities, simplicity matters too: the message is prepared by someone from the office or the board, not by the IT department.
SMS API connects the platform with the system you already use – a store, a CRM, or accounting software. Instead of logging into the panel, your system triggers the send itself the moment something important happens.
Automated SMS sending is based on events. Placing an order triggers a confirmation, a status change to „shipped” triggers a delivery notification, and an approaching appointment triggers a reminder. The whole communication then runs without human involvement, which matters especially at thousands of transactions per month.
You have over twenty ready-made integrations at your disposal, including: BaseLinker, PrestaShop, Shoper, IdoSell, Magento, Shopify, WooCommerce, Comarch e-Sklep, HubSpot, Pipedrive, amoCRM, Enova, Monday, Make.com and Zapier. Connecting with Make.com and Zapier additionally opens the way to marketing automation scenarios without writing code. If you use a system outside the list, you can build the integration yourself based on the API documentation.
You can also fully automate sending on the platform side – we described this on the automatic SMS sending page.
Every marketing campaign involves processing personal data, so it falls under GDPR. Since 2024 the Electronic Communications Law applies as well, and its Article 398 regulates sending commercial information to phone numbers.
In practice this means several specific requirements:
The source of the database is a separate matter. Purchased lists or numbers obtained from a third party are risky – consent given to someone else usually does not cover your brand. On top of that comes the operational risk: sending to a base that does not know you generates complaints, and those translate into restrictions on the operators' side.
Transactional notifications follow a different logic – a message about order status or an appointment date results from performing a contract, not from marketing activity. We collected more practical guidance on the GDPR and SMS sending page.
And for those who have doubts about the effectiveness of SMS advertising, we have prepared real business cases. Join SMS-Fly service and achieve ROI of 400% by using our tools.
*ROI — return on investment ratioThe cost depends on the monthly volume – the higher the number of sends, the lower the unit rate. There is no subscription, no activation fee, and no hidden costs.
View all prices| Number of messages (pcs/month) | Cost of one SMS (PLN) |
|---|---|
| 1 – 10 000 | 0.069 PLN |
| 10 001 – 50 000 | 0.064 PLN |
| 50 001 – 100 000 | 0.062 PLN |
| 100 001 – 500 000 | 0.059 PLN |
| 500 001 – 1 000 000 | 0.054 PLN |
| from 1 000 001 | on request |
Translated into specific campaigns, it looks like this:
For volumes above one million messages the rate is set individually. You will find the full breakdown in the price list.
Create a free account and launch your first campaign today.
Bulk SMS sending means delivering a text message to a large group of recipients at once, from the panel, the API, or a file. It is used by online stores, service and medical facilities, financial institutions, public offices and schools – everywhere a message has to arrive instantly and reach many people at once.
At a volume of up to 10,000 messages per month the rate is 0.069 PLN per SMS, so 1000 messages cost 69 PLN. We add no subscription and no minimum fee. At larger volumes the unit price drops to 0.054 PLN.
The gateway handles up to 1000 messages per second, which gives over 3.6 million SMS per hour. In practice, a campaign to a base of several dozen thousand contacts finishes in a few dozen seconds.
You upload a file in XLS, XLSX, CSV or TXT format directly in the panel, in the file sending section. Numbers can be provided in a column together with personalisation data – the system will assign them to the right recipients.
A standard message holds 160 characters. Using Polish diacritics switches the encoding and shortens the limit to 70 characters. Longer messages are split into parts, each counted as a separate SMS.
Not for marketing messages – they require the recipient's explicit consent under GDPR and the Electronic Communications Law. The situation is different for transactional notifications, which result from performing a contract, for example information about order status.
The regulations require withdrawal of consent to be simple and free of charge, but they do not impose a single form. Placing a short opt-out instruction in the footer of marketing messages is good practice – it clearly reduces the number of complaints and keeps the database in order.
The sender name requires submission and verification on the operators' side.
Yes, international sending is possible, and the rates differ depending on the country and the destination operator.
Yes. Operators limit traffic that shows signs of spam – sending to databases without consent, messages reported by recipients as unwanted, or excessive frequency. Consent, database hygiene, and a sensible sending schedule are the best protection against restrictions.
