PHP7 and pear modules. looking for Mail

I am upgrading to PHP7 (using new server) and having an issue with Mail.php
I have it installed as Pear module on php5 (on old server) and works fine but unable to setup on new system with PHP7

I can see list of pear modules in webmin - others - PHP pear modules
but these show PHP5 modules,
how do I go about seeing PHP7 pear modules and installing php7 versions

thanks for any help.