Title: [Plugin: Custom Contact Forms] Cannot modify header information?
Last modified: August 20, 2016

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# [Plugin: Custom Contact Forms] Cannot modify header information?

 *  [leggett32](https://wordpress.org/support/users/leggett32/)
 * (@leggett32)
 * [14 years ago](https://wordpress.org/support/topic/plugin-custom-contact-forms-cannot-modify-header-information/)
 * Hi Guys,
 * Im pulling my hair out on this one 🙁 I have set up custom contact forms and 
   everything has been running smoothly until now. When I try one of my forms I 
   get the following message:
 * **The following From address failed: [contactleggett@gmail.com](https://wordpress.org/support/topic/plugin-custom-contact-forms-cannot-modify-header-information/contactleggett@gmail.com?output_format=md)
   
   Warning: Cannot modify header information – headers already sent by (output started
   at /home/content/96/9138996/html/wp-includes/class-phpmailer.php:586) in /home/
   content/96/9138996/html/wp-includes/pluggable.php on line 866
 * The site works fine on localhost and my dev environment which mirrors my live
   site but the live site gives me that message everytime. Can anyone be so kind
   as to help me out here.
 * Thanks in advance
 * Ian
 * [http://wordpress.org/extend/plugins/custom-contact-forms/](http://wordpress.org/extend/plugins/custom-contact-forms/)

The topic ‘[Plugin: Custom Contact Forms] Cannot modify header information?’ is 
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 * ![](https://ps.w.org/custom-contact-forms/assets/icon-256x256.png?rev=1067156)
 * [Custom Contact Forms](https://wordpress.org/plugins/custom-contact-forms/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/custom-contact-forms/#faq)
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 * [Unresolved Topics](https://wordpress.org/support/plugin/custom-contact-forms/unresolved/)
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 * 0 replies
 * 1 participant
 * Last reply from: [leggett32](https://wordpress.org/support/users/leggett32/)
 * Last activity: [14 years ago](https://wordpress.org/support/topic/plugin-custom-contact-forms-cannot-modify-header-information/)
 * Status: not resolved