Suggestion on how to get email in gmail into mautic automatically ongoing?

Hi,

I am setting up a campaign for a job recruitment client. The leads will come from job ads and the respondents will reply to an email address (limitation of the job board that we can’t send to a landing page).

I would like to find a way to extract the emails addresses (and 1st names if possible) from the gmail inbox and insert them into a mautic segment, automatically and ongoing.

Zapper can do it but we will exhaust the free plan quickly and would rather not pay the $20 for a basic plan.

Any suggestions, maybe using google sheets somehow?