# Cron jobs for contact 5,000

**URL:** <https://forum.mautic.org/t/cron-jobs-for-contact-5-000/10304>\
**Category:** Product Support\
**Created:** [March 1, 2018, 5:27pm UTC](https://forum.mautic.org/t/cron-jobs-for-contact-5-000/10304 "2018-03-01T17:27:12Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![krinic](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/krinic/32/232_2.png) [@krinic](https://forum.mautic.org/u/krinic)\
**Post date:** [March 1, 2018, 5:27pm UTC](https://forum.mautic.org/t/cron-jobs-for-contact-5-000/10304/1 "2018-03-01T17:27:12Z")

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Can someone recommend me the execution time of cron jobs for lists of 5 thousand contacts?

I currently have cron jobs configured as follows:

mautic: segments: update runs every minute

mautic: campaigns: rebuild runs every 2 minutes

mautic: campaigns: trigger runs every 10 minutes

mautic: emails: send runs every 15 minutes

mautic: email: fetch runs once a day

The problem is that whenever I schedule a campaign, some contacts receive the same email 2 times in a row

Any recommendation?

On the official site recommend the following:

0,15,30,45 \<- mautic: segments: update  
5,20,35,50 \<- mautic: campaigns: update  
10,25,40,55 \<- mautic: campaigns: trigger

Does this work for any number of contacts?

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**Author:** ![bizcrony](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/bizcrony/32/409_2.png) [@bizcrony](https://forum.mautic.org/u/bizcrony)\
**Post date:** [March 3, 2018, 12:29am UTC](https://forum.mautic.org/t/cron-jobs-for-contact-5-000/10304/2 "2018-03-03T00:29:28Z")

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@krinic Where you install mautic? what is version of your mautic?

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<div class="post-metadata">

**Author:** ![krinic](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/krinic/32/232_2.png) [@krinic](https://forum.mautic.org/u/krinic)\
**Post date:** [March 3, 2018, 10:31am UTC](https://forum.mautic.org/t/cron-jobs-for-contact-5-000/10304/3 "2018-03-03T10:31:13Z")

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@bizcrony

mautic I have it installed in a shared hosting

I install it in a subdomain, I work with php7

version of mautic 2.12.0

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**Author:** ![ninjoan](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/ninjoan/32/1005_2.png) [@ninjoan](https://forum.mautic.org/u/ninjoan)\
**Post date:** [March 3, 2018, 1:40pm UTC](https://forum.mautic.org/t/cron-jobs-for-contact-5-000/10304/4 "2018-03-03T13:40:30Z")

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shared hosting dont allow run cron jobs with a lower time that 15 to 30 minutes. there is not a magic cron job setting since depends from a lot of factors like server hardware, system size and other needs.