# Which mail box?

**URL:** <https://boards.straightdope.com/t/which-mail-box/3954>\
**Category:** Factual Questions\
**Created:** [October 18, 1999, 4:53am UTC](https://boards.straightdope.com/t/which-mail-box/3954 "1999-10-18T04:53:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![nasargent](https://avatars.discourse-cdn.com/v4/letter/n/bc8723/32.png) [@nasargent](https://boards.straightdope.com/u/nasargent)\
**Post date:** [October 18, 1999, 4:53am UTC](https://boards.straightdope.com/t/which-mail-box/3954/1 "1999-10-18T04:53:00Z")

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Stamped mail has a box. Metered mail has a box. Where do I put postage prepaid business reply mail?

I know dumb question, but I wonder if the post office has a preference.

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**Author:** ![Temujin](https://avatars.discourse-cdn.com/v4/letter/t/e0b2c6/32.png) [@Temujin](https://boards.straightdope.com/u/Temujin)\
**Post date:** [October 18, 1999, 6:36am UTC](https://boards.straightdope.com/t/which-mail-box/3954/2 "1999-10-18T06:36:00Z")

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I think they prefer that you put it in with the stamped mail. That’s what I always do, and I’ve never had a problem.