difference between og_mail_datas and og_mail_contents?

[e2e4]

I want to delete  email messages by criteria and see what in feng  we have

• og_mail_datas
• og_mail_contents

tables, from which I should delete messages?

seems I just miss something, but  why in feng two tables, which contain much similar information?

[alvarotm01]

In previous versions all email data was stored in one table, now for each email its info is splitted in these two tables due to performance issues.
If you want to delete an email you have to delete it from both tables, registries with the same id are part of the same email.

[e2e4]

thanks a lot!