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Getting Started

How do I register?

Before you can start sending messages you will need to first register. Just click on the ‘Register’ menu option at the top of the page and enter your preferred account login name and user details. Click on the ‘Sign-Up’ button to complete registration. The initial login details will be sent via SMS to the mobile number entered on this form.

Can I try the service for free?

Yes, a small amount of free SMS credit is added to each new account to enable you to test the service.

Are there tutorials available?

Online tutorials are available for both the web SMS send/receive and technical developer documentation is available for the SMS API. Links to these tutorials can be found on the relevant pages after logon and also at the following links:

Web SMS - Send
Web SMS - Receive
SMS API - Send/Receive


Are there any set-up charges?

There is no set-up or ongoing charges for sending SMS messages, just the cost of topping up your account with message credit as needed.

For receiving messages, Cosmic SMS provides VMNs (virtual mobile numbers). Set-up and ongoing costs vary country by country.

How much does it cost to send an SMS message?

The cost per message can vary depending on the country you are sending to. For each country there is a flat rate charge per message. For the UK the cost is 3p. Full details of message costs globally can be found here.

Does message credit ever expire?

Your message credit will never expire and can be used as little or as often as you wish.

What if I find a cheaper alternative?

Provide Cosmic with written confirmation of our competitor’s offer and it will do its best to match or beat any comparable quote.

What payment methods are supported?

Online message credit pre-pay top-ups can be made using a payment card and this is the quickest way to add credit to your account and is done automatically when the transaction has completed. Cosmic also accepts pre-pay payment by BACS. Post-pay arrangements can also be provided for and are considered on a customer by customer basis.


Is my contacts and message data secure?

Yes, Cosmic takes security very seriously. Your contacts and message data is held on its SMS platform which is hosted in a secure environment with the additional protection of a WAF (web application firewall) to restrict access and protect against common attacks. Secure end-to-end encryption is provided for customers that connect to the Cosmic SMS platform.

Do you store any of my payment card or bank details?

No, Cosmic does not hold any payment card or bank details on its servers. When you click on the ‘Submit’ button to purchase SMS credit the payment details are sent securely to the payment provider, SagePay, who process and authorise payments via Cosmic's bank, the HSBC. Cosmic SMS is PCI DSS (Payment Card Industry Data Security Standard) compliant.


Can I check the delivery status of a message?

You can check the delivery status of individual messages via the ‘Sent Messages – Itemised’ page. Sent messages are display 1 per line and each shows a colour coded circle indicating the delivery status: Green – Delivered, Amber – Unconfirmed and Red – Failed.
Delivery statistics can also be found for batch submissions (a single message to more than one recipient) on the Sent Messages – Summary page.

How do I know how much credit I have remaining?

After logging on, the balance of your current SMS credit is displayed at the top of each page and is updated automatically after each message send.

SMS Integration

How do I send SMS messages using your API?

A detailed description of the Cosmic SMS Gateway interface and how to connect to the messaging platform can be found here.

Are there any additional costs for using the SMS API?

Use of the SMS API is completely free of charge.


My login doesn’t work – what should I do?

From the Login page, click on the ‘Forgotten your password?’ link, enter your user name and email address and Cosmic will send you a link which takes you to a page where you can reset your password – this link will remain active for 30 minutes.
If you still have problems logging on, call us on +44 (0) 20 7183 9065 where Cosmic's support team will be happy to help.

Do I need a mobile phone to use Cosmic SMS?

Cosmic provides a web based SMS service, so all you require is an internet connection to enable you to log on via the Cosmic website to send messages. Cosmic SMS credits cannot be used to send messages via your mobile phone.

How reliable is message delivery?

Messages sent from Cosmic SMS are typically delivered to the phone within a few seconds. SMS messaging is a ‘store and forward’ system – Cosmic submits the message to the mobile networks, which then forward it to the phone – so short delays are possible but generally rare.

Is your service always available?

Yes, Cosmic SMS is a 24/7, 365 days a year service.

What is the maximum length of an SMS message?

The maximum length of a message supported by the Cosmic SMS system is 612 characters, which uses four messages credit. A single message can be up to 160 characters in length. Messages longer than 160 characters are split into 153 character segments (4 x 153 = 612). The first seven characters of each message segment contain information that enable the receiving phone to display the segments in the right order as a single message on the handset.

Is there any tie-in to using your SMS service?

Definitely not. When you open an account with Cosmic you are not under any obligation to use our services for any period of time. You can choose to use the service any time you wish.

What countries can I send messages to?

Cosmic can deliver to most countries globally. Some countries, due to political or other issues, can make this a challenge sometimes, but by utilising best quality connections via Cosmic's upstream partners it has most of the world covered most of the time.

The USA and Canada are exceptions in as much as SMS traffic to these countries is required to be registered beforehand. Please contact Cosmic if you have a requirement to send to the USA or Canada.

Do you provide mobile marketing data?

Cosmic SMS do not provide any marketing data. It purely provides the delivery system for your messages.

What support is available?

Telephone and email support is available between 9am and 5pm, Monday to Friday.

Get started.
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