> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.smstools.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How can you synchronize your contacts from Teamleader?

Go to '**Developers**' in the menu and click on '**Integrations**'.

![](https://storage.crisp.chat/users/helpdesk/website/-/7/b/b/7/7bb7f1f7a2418c00/image_vxmu1z.png)

You now see Teamleader among the available integrations.


![](https://storage.crisp.chat/users/helpdesk/website/-/7/b/b/7/7bb7f1f7a2418c00/image_1tnbbau.png)

You can now click on '**Proceed**'. And you'll see the window underneath.


![](https://storage.crisp.chat/users/helpdesk/website/-/7/b/b/7/7bb7f1f7a2418c00/image_14v8fku.png)

You'll have to fill in your '**Client ID**' and your '**Client Secret**'.  You can find it by going back to Smstools en go to '**API & Webhooks**'.


![](https://storage.crisp.chat/users/helpdesk/website/-/7/b/b/7/7bb7f1f7a2418c00/image_hosw8b.png)


![](https://storage.crisp.chat/users/helpdesk/website/-/7/b/b/7/7bb7f1f7a2418c00/image_1bsc1k9.png)

You can now log in to your Teamleader account.

![](https://storage.crisp.chat/users/helpdesk/website/-/7/b/b/7/7bb7f1f7a2418c00/image_16romtl.png)

Once you’ve logged in, you’ll see the window shown below. You can now go back to Smstools and your Teamleader account will be connected.

![](https://storage.crisp.chat/users/helpdesk/website/-/7/b/b/7/7bb7f1f7a2418c00/image_1cl4swu.png)

![](https://storage.crisp.chat/users/helpdesk/website/-/7/b/b/7/7bb7f1f7a2418c00/image_1d3i61v.png)