2.0.0

• BugFix: Use CRLF for header separation, except sendmail, fixes #23 #24

1.6.0

• Feature: Added new property $response and new methods getResponse and getQueuedAs #27 #29
• Feature: Added Net_SMTP debug_handler #28 #30
• BugFix: Fix whitespace removal from addresses #32

1.5.1

• BugFix: Do not use parseAddressList statically #21
• BugFix: Fix: dynamic properties deprecation #22 #26
• BugFix: Problem with giving port to constructor in smtpmx.php #26

v1.5.0

• New Feature: Establish STARTTLS connection without authentication (add new param 'starttls') #17
• BugFix: Del: deprecation warnings (PHP 8.1 E_DEPRECATED warnings when you provide null values) #20

v1.4.1

• Loosen recognition of "queued as" server response (PR #10)

• Bug #20463: domain-literal parsing error

• Bug #20513: Mail_smtp::send() doesn't close socket for smtp connection

v1.4.0

Clarified licensing to "New BSD" (3-Clause BSD)

• Bug #21082: Inconsistent licensing