A campaign is one send to many people at once, from a phonebook. For whoever answers, it matters for a practical reason: the moment the broadcast goes out, the replies all land in the Inbox.

Campaign row — Campaign, channel, phonebook and status.

Statuses — Draft, scheduled, sending, completed.

The result

Campaign result — How many received it and how many failed.

Failures — The failures, with the reason.

Mass failure is the phonebook, not the channelWhen many sends fail at once, it is almost always numbers without the country code, with an extra digit, or deactivated. The verifier sorts that out before the next broadcast.

The wave that follows

After the broadcast, the inbox fills up.

Agree on who covers the first hourReplies to a campaign arrive concentrated in the first sixty minutes. If nobody is rostered, the conversation goes cold and the whole broadcast yields half of what it could.

Final screen — The conversations that came from the campaign.

Whoever replies already knows about the offer — do not repeat it all.
Go straight to what they asked.
Label the conversation so the campaign's return can be measured later.