Just a friendly reminder to everyone who USES reusable shopping bags (thank you!) to please hot wash them on a regular basis.

用环保购物袋(谢谢！)的大家，记得定时清洗哦。

youdao

Please consider this letter as a friendly reminder.

谨以此函向贵方做出友好的支付提醒。

youdao

If someone agrees to make an introduction for you but does not do it right away, feel free to send a friendly reminder.

FORBES: How To Start Networking -- And Succeed

Championship top scorer Bothroyd raised his goal tally for the season to 15 in 16 games, handing Fabio Capello a timely reminder of his quality just hours before the England coach names his final squad for Wednesday's friendly against France.

BBC: Scunthorpe 2-4 Cardiff