The USPS offers a free service: Informed Delivery. Sign up online. Access USPS and click on the icon in the top left corner to request it.
Every morning that I will have a delivery, I receive an email with pictures of the envelopes. Packages indicate the USPS tracking code.
Now requires annual renewal.
Email and Online access, too!
Neighbor collected my mail when I don’t meet the minimum number of delivery days.