# Different number of contacts in segment and email sent

**URL:** <https://forum.mautic.org/t/different-number-of-contacts-in-segment-and-email-sent/30273>\
**Category:** Product Support\
**Created:** [December 20, 2023, 11:00am UTC](https://forum.mautic.org/t/different-number-of-contacts-in-segment-and-email-sent/30273 "2023-12-20T11:00:34Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![joeyk](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/joeyk/32/11164_2.png) [@joeyk](https://forum.mautic.org/u/joeyk)\
**Post date:** [January 3, 2024, 1:59pm UTC](https://forum.mautic.org/t/different-number-of-contacts-in-segment-and-email-sent/30273/8 "2024-01-03T13:59:17Z")

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Hi,  
My suspicion was also DNC, this is why I suggested it in our call.  
I’m happy that the math comes together.

Next step would be to run a DNC report where you you display the DNC reason for each contact. This gives away if they were DNC as a mistake.

Mass DNC can happen if your domain is blacklisted, or refused.

Joey

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