WP Mailster v1.8.5

[Bug Fix] Email without TO recipient will not stop email(s) from being retrieved from mailing list inbox
[Bug Fix] Fix PHP include problem related to library Html2Text (and others)
[Bug Fix] The add2Group parameter works in the subscribe-shortcode
[Bug Fix] Ability to deal with charset collation differences (between WP users and WP Mailster database tables)
[Bug Fix] Avoid PHP warnings in PHP 8.1