Hello,
I search solution for auto backup base MySQL and when it's finished send to admin root email.

I it's possible you add this function in next version of IPB ?

Eh, e-mailing definitely would stop working once you get enough members and posts (which can easily grow to several gigabytes). Any sort of database backup should probably be done using a cron job or the like rather than trying to perform the same task through a web interface.

My host don't give me autorization for make cronjob and I have only 1 backup by month.
and when my base have over 100MB.gz ok I will move to dedicat server. But right now my base have only 1MB, and I don't have time go each day look if member have posted new topic of no...
After crash of my host I have losted 2 weeks for topic...

Then you should just write up a PHP script and stick it into IPB's task manager. For most setups, e-mailing wouldn't work unless your e-mail provider allows reception of extremely large messages.

ok I see thx

Give db_backup a try.
you can probably write a script that will just touch it daily to by pass the cron problem and it will ftp the backups to a server also. It worked out nicely for me :)