Do the words 'Home Mailer' next to coupons in your match ups drive you crazy?? There are lots of coupons that are sent directly from stores or manufacturers to our homes. I know it can be frustrating to see these listed and not have them, so here are a few tips of how to increase your mailbox coupon stash. Sign up for online samples. Many samples come with coupons, and these companies will keep your name for possible future mailings and offers. Procter & Gamble is the best at sending you presents you never expected! I post freebies and samples