These are the raw API docs if you want to get creative on your own. If you're unsure where to start, visit our Quick Start Guide to get setup.


Replace <USERNAME> with your API endpoint username


Use authorization header in request: authorization: Token token=<API_KEY>

Replace <API_KEY> with your API key

Date format

Dates are passed as strings formatted to RFC 2822 standards e.g. "Fri, 16 Feb 2018 13:00:00 GMT"

Standard HTTP response codes

Status CodeStatus Message
200Service Ok
400Bad Request
404Not Found
500, 502, 503, 504Server Error

Message Size Limit

Messages are currently limited to a size of 50MB or less. Attempting to send a message larger than 50MB will result in a 'Failed to send' error.