Could someone explain this to me? Are these gift cards?
No. These are printed plastic advertisements delivered via the postal service. (Other companies might purchase small mini catalogs/coupon books, colorful envelopes, or eye-catching postcards for their mail-based advertisements.) These mailers are sent to many people. Most people refer to these mailers as "junk mail."
Spectrum is very bad about sending lots of these, as OP has shared.
Could someone explain this to me? Are these gift cards?
No. These are printed plastic advertisements delivered via the postal service. (Other companies might purchase small mini catalogs/coupon books, colorful envelopes, or eye-catching postcards for their mail-based advertisements.) These mailers are sent to many people. Most people refer to these mailers as "junk mail."
Spectrum is very bad about sending lots of these, as OP has shared.