delete any chatacter from the text other than [az@.-_]+[09]

[civali]

I wanted to delete any character from a text other than [azAZ]+[09]+[-_@]. In other words, remain on the text only emails form expression.
How to do that?
Tks.
L. Civali

[ben_josephs]

Find what: [^a-z0-9_@-]
Replace with: [nothing]

[X] Regular expression

Replace All

The - must be either the last character in the [...] expression or the first character after the ^.