Sets the speed level of the mailing with the provided id. Valid values are: „low“, „medium“, „high“, and „supersonic“.

Example

POST https://api.maileon.com/1.0/mailings/1/settings/speedlevel
Content-type: application/vnd.maileon.api+xml
Accept: application/vnd.maileon.api+xml; charset=utf-8
Authorization: [XXX]

<?xml version="1.0" encoding="UTF-8"?>
<speed_level>medium</speed_level>

Status: 204 No Content