Terms & conditions

Sign-Up.to provide our Permission Marketing API to enable developers to integrate Sign-Up.to with other services and extend our functionality. We want to make it as easy as possible for you to work with us, but we also have to protect our systems and our users.

Your API usage must comply with these terms and conditions in addition to our standard terms of service, privacy and anti-spam policies.

General usage

Sign-Up.to is a permission marketing platform. We require all usage to be compliant with our anti-spam policy. Failure to comply with this will result in termination of your API access without notice, in order to maintain the integrity of our service. The decision on whether activity is in breach of our anti-spam guidelines rests solely with Sign-Up.to.

Access and privacy

You must only access our API using methods and authentication procedures documented in our documentation at dev.sign-up.to. You will respect the privacy of our users and their data, and you will display and adhere to an appropriate privacy policy for your integration.

Rate limiting

In order to maintain a suitable standard of service for all our customers, we reserve the right to rate limit requests to our API. If you would like to request consideration for an increase in your limit, please contact us with details at support@sign-up.to.

Handle errors gracefully

This is the Internet, things do occasionally break. We try our hardest, but it’s unavoidable. Please make sure that you code your integrations to handle outages, errors and other failures gracefully.

Don’t be naughty

It’s your responsibility to ensure that you have acquired and maintained all licenses required for your integration, and that your integration is not infringing any rights or breaking any laws or regulations.


To the maximum extent permitted by law, we provide our API as-is. We don’t provide warranties of any kind, either express or implied, including but not limited to merchantability and fitness for a particular purpose.


You indemnify and hold us and our staff harmless from any losses (including legal fees) that result from third-party claims that relate to your use of the Permission Marketing API.

Community-contributed code

For all software code identified as "community-contributed", we disclaim any express or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. In no event shall we be liable for any direct, indirect, incidental, special, exemplary or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage.


You may terminate this agreement at any time by ceasing your usage of and access to our API. We reserve the right to terminate or restrict your API access at any time without notice if we believe you to be in breach of our terms or anti-spam policy, or with at least 7 days notice for any other reason.


We own all worldwide rights, titles, and interest in the services, the API, example code and any software development kits (SDKs) we may provide, including all intellectual property rights, marks, code, and features. You will not infringe or copy our code, content, or designs. Any rights not expressly granted by this policy are withheld.

You own all worldwide rights, titles, and interest in your integration, except for the API, any of our example code or SDKs, our marks, and the services, including all intellectual property rights.


We may update or modify this policy from time to time, either by posting the changes to our website or notifying you by email. Continued usages of our API means that you accept any such changes. If any changes are unacceptable to you you should stop using the API.