# Custom header in wordpress

**URL:** <https://community.brevo.com/t/custom-header-in-wordpress/2047>\
**Category:** Integrations\
**Created:** [Septembre 4, 2024, 1:21 UTC](https://community.brevo.com/t/custom-header-in-wordpress/2047 "2024-09-04T13:21:36Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![billyqureshi](https://avatars.discourse-cdn.com/v4/letter/b/85f322/32.png) [@billyqureshi](https://community.brevo.com/u/billyqureshi)\
**Post date:** [Septembre 4, 2024, 1:21 UTC](https://community.brevo.com/t/custom-header-in-wordpress/2047/1 "2024-09-04T13:21:36Z")

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Hi. I use gravity forms in wordpress connected to Brevo using the Fluent SMTP plugin. Works fine.  
I added a filter to add a new header to my outgoing gravity form emails. This is not working - the header does not appear in the final email.  
When i disable the Fluent SMTP plugin and therefore bypass Brevo, the header does appear.  
How can i stop brevo overwriting my header?

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**Author:** ![ahudavert](https://dub1.discourse-cdn.com/flex013/user_avatar/community.brevo.com/ahudavert/32/14_2.png) [@ahudavert](https://community.brevo.com/u/ahudavert)\
**Post date:** [Septembre 9, 2024, 2:27 UTC](https://community.brevo.com/t/custom-header-in-wordpress/2047/2 "2024-09-09T14:27:51Z")

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Hi @billyqureshi , thanks for posting on this community.

To what extent do you need the Fluent SMTP plugin? I’m not a master of it, but as Brevo is supposed to already let you send SMTP emails, could you please elaborate on why you need another plugin?

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**Author:** ![billyqureshi](https://avatars.discourse-cdn.com/v4/letter/b/85f322/32.png) [@billyqureshi](https://community.brevo.com/u/billyqureshi)\
**Post date:** [Septembre 9, 2024, 2:47 UTC](https://community.brevo.com/t/custom-header-in-wordpress/2047/3 "2024-09-09T14:47:51Z")

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Hi. Thanks for coming back to me.  
Essentially I don’t use the brevo email api to send transactional emails. I send them as using Wordpress email wp\_mail(), and the emails usually originate from a forms plugin called gravity forms.  
This means I can’t add tags or other custom data to the email, as I could if I used brevo email api.  
So the only way to add custom data is by adding a custom header with X-Mailin-custom and this does work.  
The issue is Wordpress users need a plugin to connect the wp to brevo. You can use fluent smtp or brevos own smtp plugin, but they both overwrite headers so the custom value is lost.  
I have now discovered that gravity forms offers an smtp plugin which does not overwrite the headers. So I can now send transactional email via Wordpress which retains my custom header , and so use brevo webhooks to get notifications for failed emails which contain the custom value from the header , helping me trace the source of the failed email.  
I hope this clarifies my situation.

To clarify, it was fluent smtp that overwrites the header, not brevo itself.