If you use Let's Encrypt SSL certificates for MAMP, you can create a crontab to automatically check your domains for SSL renewals. Below, we create a crontab that will check at 1:15am each morning.
1. Open Terminal.
sudo crontab -e
3. Hit "i" and then type
15 1 * * * /usr/local/bin/certbot renew --quiet
:wqto save the crontab job.
Some users are reporting that even though this job will automatically check for SSL renewal updates each day, you need to manually restart APACHE if a new SSL is renewed in order to apply the latest SSL certificate to your website host (if you are mapping SSL's using the LIVE alias').