- Case study
- Association
- Ad Grants
- YouTube
Collectif Mentorat: +309% mentor sign-ups and an 18% lower cost per sign-up

- Levers
- Google Ads, Google Ad Grants, Bing Grant, YouTube
- Updated on
- 09/10/2025
Collectif Mentorat × Ads for Change in numbers
- mentor registrations
- +309 %
- of the registrations come from advertising campaigns
- 50 %
In short
- The client : 1young1mentor is an initiative that aims to connect young people with volunteer mentors
- The challenge : Maximize mentor and youth registrations while optimizing acquisition costs
- The result : +309 % mentor registrations, with a reduced CPA of 18 %.
Who is Collectif Mentorat?
1young1mentor is an initiative that aims to connect young people with volunteer mentors in order to support them in their career guidance, their studies or their integration into the world of work, thus promoting equal opportunities and personal development.
The challenge
Maximize mentor and youth registrations while optimizing acquisition costs through multi-platform campaigns.
Our approach
- Google Ads, Google Ad Grants and Bing Grant campaigns focused on specific objectives
- Advanced trackingcoordination with the CRM team, implementation of a CMP, Consent Mode and Enhanced Conversion.
- YouTube campaign to increase visibility and registrations
The results
- +309 % mentor registrations, with a reduced CPA of 18 %.
- Stable youth registration (-3 %), reduced CPA of 21 %.
- 50 % of the registrations come from advertising campaigns.
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