SMS mailing
Onlinesim
Onlinesim says it receives SMS on virtual numbers, through one-time reception or number rentals. The key trade-off is that third-party providers supply connectivity and routing, while the provider excludes refunds for specified network outcomes.
This may suit media buyers who need SMS reception, provided they can assess the delivery and refund conditions before relying on it.
Editorial review based on public sources, without hands-on testing; facts checked on 2026-10-31.
This page contains no partner link to this service.
- Logo
All logos are trademarks of their holders, displayed solely to show which service is meant.- Name
- Onlinesim
- Category
- SMS mailing
- Official site
- onlinesim.info · No link provided
- Facts checked
What the marketplace says it provides
The following details come from Onlinesim pages checked on 2026-10-31.
- Registration use: virtual numbers for websites, online services, and apps (Onlinesim About page, checked 2026-10-31).
- Service coverage: the vendor states support across more than 1000 services (Onlinesim homepage, checked 2026-10-31).
- Country availability: the homepage states more than 110 countries (Onlinesim homepage, checked 2026-10-31).
- Country availability: the About page states over 90 countries (Onlinesim About page, checked 2026-10-31).
- Interface: the vendor lists 10 languages (Onlinesim About page, checked 2026-10-31).
- Formats: one-time reception and number rentals for several days or weeks (Onlinesim About page, checked 2026-10-31).
Which numbers and SMS uses appear?
The listed uses include registrations for messengers, social networks, and services where a personal phone number is not used. The vendor also presents testing, work, and data protection as use cases.
The marketplace describes Active Numbers as providing access to SMS-reading functionality. Onlinesim says each purchased number is used by one client, and that numbers are not reused and only the customer can see received codes. These are provider statements, not independently verified findings.
How do activations and rentals differ?
A single-service activation is for messages from one service, while a rental number can receive SMS from multiple senders, subject to prohibited-sender exclusions. The API documentation says the activation window is 15 minutes for most services.
During a single-service activation, users cannot change the service. For API use, Onlinesim lists an API key among the authentication methods, while access is limited to registered users with an Onlinesim profile.
The documentation specifies JSON or TXT responses, depending on the method and results. Common API errors return HTTP status 200, with the error code in a response field; the provider says the error-code list may expand. Requests may also be limited by frequency or concurrency.
How do prepaid credits and refunds work?
Onlinesim says users can try the service for free; paid use is prepaid through payment methods on the Platform, with amounts shown as Account credits. The provider says prices may change without notice, and applicable taxes, duties, and levies are excluded.
Refunds are reviewed case by case rather than issued automatically. A request must identify the account, explain the reason, and include payment details sufficient to identify the transaction.
The provider says it reviews sufficiently detailed requests within 5 business days of receipt. If a request concerns inability to use Marketplace Services, it may offer troubleshooting or alternatives; missing information may delay or prevent processing. Approved refunds generally go to the original payment method, subject to technical or payment-provider restrictions, and are typically processed within 3–5 business days.
The terms exclude charges for network outcomes such as non-delivery, delay, blocking, or rejection, and generally exclude outcomes caused by third parties or external networks. Third-party processing, conversion, and bank fees are also non-refundable.
What to ask about an API connection
Before relying on an API connection, ask what account prerequisites and technical setup it requires. The documentation describes access conditions, but a buyer should clarify the steps needed to connect the API to the intended workflow.
Ask which implementation details the provider expects from the buyer, and how the connection should be handled if the workflow changes. In general, clarify who handles configuration and what information support needs to investigate connection problems.
For a planned integration, request the relevant technical documentation and confirm that its requirements match your existing setup. These are questions to put to the provider, not claims about a particular integration path.
Which documented functions cover the basics?
The offer includes both one-time reception and number rentals, so buyers can assess these formats against the duration of their SMS task.
The vendor lists registrations for messengers, social networks, and services without a personal phone number among its use cases. Its API documentation covers SMS reception and number rentals.
Onlinesim says online support chat and email support are available around the clock. The scope described is practical to compare: check the intended use, required rental format, and API access conditions before choosing a route.
Where do the terms narrow the service?
The main limitation is that delivery depends on third-party connectivity, and the provider excludes refunds for network outcomes such as delay or non-delivery. Other external-network outcomes are also excluded under the refund terms.
Free numbers are limited by quantity and country, and messages received on them are public to other site users. The provider may require client identification and may suspend or terminate access if it is not completed.
The provider says accounts are deleted if no new purchase occurs within 30 days after the last activity. On deletion, remaining balances and prepaid amounts are forfeited and non-refundable. Messages from payment services, banks, and other financial institutions are unavailable.
Who can work with prepaid credits?
The service may fit buyers who need virtual-number SMS reception and can work within its registration and use conditions. Users must register and provide an email address to receive Marketplace Services.
Use is permitted only where lawful, and clients are responsible for determining legality. Buyers should also account for possible identification checks, the financial-service message exclusion, and the terms governing unused balances. Check these conditions against the intended workflow before adding prepaid credits.
Which SMS terms should alternatives match?
Compare providers by number coverage, sender restrictions, per-message or rental pricing, API requirements, delivery reporting, refund treatment, and support routes. In general, matching these terms against the intended SMS workflow makes differences in service scope and costs easier to assess.
What we could not confirm
- Integrations: supported services and connection options
- Setup requirements: implementation steps and prerequisites
- Per-message pricing: charges for individual activations or SMS
- Rental pricing: rates by duration and number
- Sender-ID rules: accepted or excluded sender identifiers
- Delivery reports: available status details and reporting format
Questions about API access and refunds
Who can access the API?
API access is limited to registered Onlinesim users with an Onlinesim profile. The documentation says users can authenticate with an API key, among other methods, and that responses may be JSON or TXT depending on the method and results.
Can the service receive messages from banks or payment services?
No. Onlinesim states that receiving messages from payment services, banks, and other financial institutions is unavailable. This exclusion applies to the listed message sources, so check whether the intended sender falls within that category before using the service.
Are messages on free numbers private?
No. The provider says messages received on free numbers are public and accessible to other site users. Free numbers are offered for testing, but their available quantity and countries are limited. Do not use this route for messages that should remain private.
How does someone request a refund?
Refunds are not automatic and are reviewed case by case. The provider requires a written request with the account identifier, reason, and payment details sufficient to identify the transaction. It says sufficiently detailed requests are reviewed within 5 business days of receipt.
Where do approved refunds go, and how long can processing take?
The provider says approved refunds generally return to the original payment method, subject to technical or payment-provider restrictions. It typically processes approved refunds within 3–5 business days, while the time for funds to be credited may vary by bank and payment provider.
Which language of the refund policy has legal effect?
Onlinesim states that only the English version of the refund policy has legal effect; translations are for convenience. Readers relying on a translated version should compare it with the English policy when reviewing refund conditions.
Does the third-party model fit?
Fits if… virtual-number SMS reception or rentals meet the use case and the buyer accepts prepaid credits, third-party routing, and the stated refund conditions.
Probably not if… the workflow requires messages from financial institutions or private messages on free numbers.
Main risk… external network outcomes are outside the refund scope, while balances remaining after automatic account deletion are forfeited.
Sources
Below are the public pages behind the facts above, together with the date each one was read.
- onlinesim.infochecked
- onlinesim.info/aboutchecked
- onlinesim.info/documentation/offerchecked
- onlinesim.info/openapi_docs/Onlinesim-API-UN/infochecked
- onlinesim.info/documentation/refundchecked
- onlinesim.info/company_detailschecked
Notes on the making of this review
Editorial team of Profile Workshop. Profile Workshop compiled this page from the public sources above as they stood on 2026-10-31. We did not test the service ourselves. We revise the text whenever those sources are updated.
Last updated:
Right of reply
Do you represent Onlinesim and see an error or outdated information here? Write to us with evidence. Once the correction is documented, we fix the entry or take it down. Payment never gets an entry removed or softened.
- Our contact for replies
- No data available
- Response time
- No data available