> ## Documentation Index
> Fetch the complete documentation index at: https://docs.superoffice.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Manage senders

> Learn how to register or match unknown senders in SuperOffice CRM

SuperOffice Inbox helps you identify and manage email senders. If the email address is not yet registered in SuperOffice CRM, you are prompted to add it as a contact. You can also look up a sender's details or register additional addresses directly from the email header.

## Look up known contact

You can view contact information for senders and recipients in the message header.

* **Hover** to show a preview with name, title, company, and phone numbers.
* **Click** to open the full contact card.

If multiple contacts match the email address, a list appears so you can select the correct one.

## Add unknown sender to SuperOffice

When the sender is not recognized, a yellow bar appears above the message preview.

1. Click the **Unknown sender** link in the banner to open the **Add contact to SuperOffice** dialog.

   ![Yellow banner with Add contact dialog -screenshot][img1]

2. In the dialog, you can:

   * Search for an existing contact or company.
   * Select a company match under **This contact might work at** if suggestions are shown.
   * Click **Create new company and contact** to register both , if the sender is not yet in SuperOffice CRM.

   ![Add contact dialog in SuperOffice Inbox -screenshot][img2]

<Tip>
  You can also click any unrecognized email address in the header, including *Cc* or *To*. The same dialog opens. If the domain is recognized, matching companies are listed. If not, you can still search or create a new entry.
</Tip>

[img1]: /media/loc/en/email/inbox-unknown-sender.png

[img2]: /media/loc/en/email/inbox-add-contact.png


## Related topics

- [Archive emails](/en/email/inbox/learn/archive.md)
- [About contacts](/en/contact/learn/index.md)