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Using the automatic tag to keep the same number per contact

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When a contact first writes to a WhatsApp number connected to WaFloW.ai, the system automatically assigns them a device identifier tag.

This mechanism allows all future conversations to be conducted from the same number, without manual intervention.

What is automatic device tagging? #

The automatic tag is a label that WaFloW.ai assigns to the incoming contact in the first message received.

This tag:

  • Identify the WhatsApp number with which the conversation was initiated.
  • Allows the system to prioritize that same number in subsequent messages.
  • Avoid unexpected number changes for the contact.

It is an automatic and transparent process.

When is the automatic tag assigned? #

The tag is assigned when:

  • A contact writes to a WhatsApp number for the first time.
  • The message is successfully received by WaFloW.ai.
  • The contact does not yet have a device tag assigned.

From that moment on, that contact is linked to that number.

How it affects sending messages #

Once the automatic tag has been assigned:

  • WaFloW.ai prioritizes that device to communicate with the contact.
  • It doesn’t matter if there is a different favorite device.
  • The overall priority of other numbers does not matter.

👉 Exclusive Tag Rule: The #WA#ID tag and the wa+NUMBER tag cannot coexist. There can only be one routing tag at a time; adding a new one automatically removes the previous one.

Example: If a client sends a message to one of your WhatsApp numbers connected through WaFloW, they will receive the wa+NUMBER tag. If the contact previously had a #WA#ID tag, it will be automatically deleted. Conversely, if you manually add a #WA#ID tag (or send a message routed via a specific ID), the system will delete the wa+NUMBER tag, ensuring all future messages are routed through that specific ID.

Advantages of using automatic tagging #

This system allows:

  • Maintain continuity in the conversation.
  • Avoid confusion when contacting us.
  • Scale multiple numbers without chaos.
  • Manage sales and support consistently.

The contact always “recognizes” the same number.

Practical example #

Setting:

  • Subaccount with 3 connected numbers.
  • A contact writes for the first time to the number with ID 2.

What is happening:

  1. WaFloW.ai receives the message.
  2. Automatically assigns device tag 2 to the contact.
  3. All future messages to that contact will be sent from number 2.

Even if there is a favorite or higher priority on another device.

Relationship with the shipping hierarchy #

Within the sending hierarchy, the automatic tag has:

  • High priority
  • It is only surpassed by manual forcing.

Simplified order:

  1. Manual forcing (#WA#ID)
  2. Automatic contact tagging
  3. Favorite device
  4. Automatic by priority / ID

When it is particularly useful #

  • Multiple numbers per subaccount.
  • Multi-channel sales teams.
  • Customer support.
  • High-volume agencies.

It is one of the pillars of the system’s stability.

Common mistakes #

  • ❌ Thinking that the system changes numbers randomly.
  • ❌ Manually removing the tag without understanding the impact.
  • ❌ Manually forcing when it is not necessary.

Best practices #

  • Let the automatic tag do its job.
  • Avoid deleting or modifying these tags without reason.
  • Use manual force only in specific cases.
  • Document internally how this system works.

Summary #

The automatic tag:

  • Assigned to the first incoming message.
  • Link the contact to a specific number.
  • Ensures automatic continuity.
  • It is key to scaling up without losing control.

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Updated on 30 de January de 2026