Thank you so much for the quick reply. But, I am not an expert,
On 10 sep, 13:35, andré renaut <
andre.ren...@gmail.com> wrote:
> wordpress fires the 'publish post' event each time a post is published or
> modified (if already published).
> To prevent duplicate mails
>
> * On mailpress install, for each published post, mailpress stores in wp
> postmeta table the following meta_key :
> _MailPress_prior_to_install
>
> * On new post published, for that published post, mailpress stores in wp
> postmeta table the following meta_key :
> _MailPress_published
>
> if you are using category_newsletter add-on,
> _MailPress_published_category_(cat_id)
>
> So each time the event 'publish post' is fired by wp
>
> MailPress tests if the post is not
> "_MailPress_prior_to_install"
> OR
> "_MailPress_published" for per_post newsletter OR
> "_MailPress_published_category_(cat_id)" for per_post category newsletter
>
> to prevent duplicate mails
>
>
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