In some embodiments, a server may associate a channel identifier a software development kit (SDK). The channel identifier represents an in-application messaging channel of a software application that imports the SDK as part of the software application. The server may associate the channel identifier with an end user identifier. The server may receive a two-way messaging series from the message publisher. The server may receive, from a message publisher, a command to launch the two-way messaging series. The server may determine that the end user to be an intended recipient of the two-way messaging series. The server may transmit a message to the SDK via the in-application messaging channel. The server may receive a response from the SDK. The server may perform an action based on the response.