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WhatsApp campaign for contact lists

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Conversa Labs

Conversa Labs

Last updated on Jun 27, 2026

Overview

A WhatsApp campaign sends a message to a contact list at once. You define the audience (by labels), choose the content (an approved HSM template or a message with variants), and decide when to send. The platform sends at a controlled pace and shows progress (sent, delivered, read and replied).

It's the right tool for announcements, promotions, notices and contact re-engagement — always respecting WhatsApp's rules for bulk messaging.

Prerequisites

  • Access to the Campaigns module.
  • A connected WhatsApp inbox.
  • Contacts with labels that define the audience.
  • For template-based campaigns: approved HSM templates on the inbox (see the templates and variables article).

Step by step

  1. Open Campaigns in the sidebar and select the WhatsApp type.
  2. Click Create campaign and give it a title.
  3. Select the WhatsApp inbox that will send it.
  4. Define the audience by selecting the labels of the contacts who should receive it.
  5. Build the content:
    • HSM template: pick the template and language, then fill in the variable values; or
    • Message with variants: write the message (using the variable picker) and, if you want, add variants so each contact receives slightly different wording.
  6. Adjust the send settings (min/max delay between messages, batch size and randomization) for a more natural send.
  7. Choose when to send: send now, schedule for a date/time, or save as draft.
  8. Confirm and track the status and progress in the campaign list.

Settings & options

  • Title: internal identifier for the campaign.
  • Inbox: the WhatsApp number that will send the messages.
  • Audience: contacts selected by labels.
  • Content: HSM template (with variables) or a message with variants.
  • Send settings: min and max delay (seconds), batch size and variant randomization — these help reduce the risk of blocking.
  • Scheduling: send now, schedule, or draft.
  • Status: draft, scheduled, sending, paused, completed or failed.
  • Actions: pause, resume or cancel a running campaign.
  • Progress: sent, delivered, read, replied and failed.

Use cases

  • Announce a promotion to customers in a specific label.
  • Send an important notice (hours change, new product) to the right audience.
  • Re-engage inactive contacts with a segmented offer.
  • Confirm attendance at an event or remind people of a date.

Tips, limits & best practices

  • To start conversations with people outside the 24-hour window, WhatsApp requires an approved HSM template — free-text messages only work inside the service window.
  • Use the send settings with delays between messages and smaller batches: very fast sends increase the risk of blocking (anti-ban).
  • Segment well by labels and send only relevant content to reduce opt-outs and reports.
  • Test with a small audience before a large send.
  • Track the progress and pause the campaign if you notice many failures.

Troubleshooting

  • I can't select the inbox: confirm there is a connected WhatsApp inbox.
  • Empty audience: check whether contacts exist with the chosen label.
  • Template doesn't appear: verify there are approved templates on the selected inbox.
  • Many send failures: lower the pace (increase the delays and reduce the batch size) and check the health of the WhatsApp number.

See also