---
title: "Login to Mercell Source-to-Contract as an existing user (delete)"
canonical: "https://support.mercell.com/space/MSTC1/196163371830/Login%20to%20Mercell%20Source-to-Contract%20as%20an%20existing%20user%20(delete)"
format: markdown
---
NegometrixPortal and Mercell Source-to-Contract have merged. If you are a NegometrixPortal user, you can now log in to Mercell Source-to-Contract with your email address and password that you previously used on NegometrixPortal.

### Log in as NegometrixPortal user (purchasers)

Go to [https://s2c.mercell.com/](https://s2c.mercell.com/) 

Enter your NegometrixPortal username and password and click **Login**

If you, as a buyer, use both NegometrixPortal and Mercell Source-to-Contract, please apply your Mercell Source-to-Contract login details.

### Log in as NegometrixPortal user (providers)

If you are a user on NegometrixPortal, you can now log in to Negometrix4 with your NegometrixPortal details.

Important: In NegometrixPortal you are a registered participant in a tender. If you want to participate in tenders on Negometrix4, you must register as an organization.

Are you a user of both applications? Then you apply your Mercell Source-to-Contract login details.

Mercell Source-to-Contract: [https://s2c.mercell.com/](https://s2c.mercell.com/)