Sending emails for free (without SendGrid)

I tried setting up email sending in Strapi using SendGrid as a provider. But I could’t create a SendGrid (I used 3 diffent emails and all of them weren’t accepted)

Is it possible to send emails with strapi for free without using SendGrid?

System Information
  • Strapi v4.15.1:
  • Windows 11:
  • PostgreSQL:
  • Node v20.9.0:
  • NPM 9.8.1: