Use Joomla mailsend with my old php site. - Joomla! Forum - community, help and support

i have web site i've been working on , changing bits , pieces make work better, site down right now.

what want sending lot of e-mails subscribers , friends of mine send e-mails well.
there 5.000 e-mails going out @ once , problem on php mysql site on web host can't work.

a friend of mine told me joomla should use , i've been trying joomla quite time, lot of things show , has done. , old site working fine. it's little thing send whole lot of e-mails stopping me right now.

so, possible me grab ones db on sendlist, bring html code unique links used in statistic system have made, , send things using joomla. best thing if click on send old page, end on new invisible page in joomla starting send process , take me page can go on if nothing else going on in background.

is possible @ , should in joomla? i'm looking here? plug in, module or what?
is easy set thing?

i don't want news letter application have name in footer telling people sent using bla bla bla. want clean , design when newsletter.

or have other suggestions me out here?

the thing is, else clicking send button , want simple them well, since system making lot of building of newsletter simple already. there 1 field subject, 1 field text, 1 uploading of image , links placed in right places (with unique code every person). option sender can choose between 3 templates (actually 3 different css-files). click send.
and here want joomla job me. whatever might be.

i hope understand i'm trying do

i think ought mail chimp account , send them way.