This friendly reminder is encouraging.

友好的审视很令人鼓舞。

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

Please consider this your friendly reminder: it's wedding season.

请记住这个善意的提醒：这是一个结婚季。

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

It has been a series that, at times, has tested the patience of those both playing and watching it because of the batsman-friendly pitches that yielded 17 centuries in all, but the climax was another reminder of what is truly great about Test cricket.

BBC: Jonathan Agnew column

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