The main goal of the next release is to support oauth2 for SMTP transport. While some providers, like Azure, don't support non-interactive oauth2, gmail does and is the most requested feature.
To support oauth2, some UI changes will be made around authentication, including a plugin system allowing different providers to have 'automatic' settings applied to ease installation/configuration.
These changes should not break compatibility for any modules relying on SMTP, therefore it should remain in the 1.x branch for now. However, its possible (likely) Drupal 8 support will be dropped with this release.
The other big change will be supporting key AND encrypt, as there are valid use cases for both. They will be optional, but a warning will be thrown if you're storing plaintext passwords.
List of issues planned to be solved by release:
🐛
Error sending e-mail: Invalid address
RTBC
📌
Add help topic to inform user about available config changes via settings.php
Active
✨
Implement OAuth to support GMail/GSuite accounts
Needs review
💬
Contact module messages not removing HTML tags
Active
🐛
Unable to debug
RTBC
🐛
Message subject : accented character encoding problem
Needs work
🐛
HTML is not stripped due to incorrect schema for smtp_allowhtml
RTBC
📌
Bump required phpmailer version for composer
RTBC
✨
Smtp delivery option missing from 8.x
Needs work
#2771559: Html tags in mail →
✨
Allow SMTP servers with self-signed certificates
Needs work
#3224734: SMTPMailSystem::mail throws exception "Invalid address: (to)" instead of returning FALSE →
✨
Respect override in settings.php
Needs work
✨
Warn the admin that the password for the SMTP server is stored as plain text
Needs work
#3134249: Add Key module dependency to (optionally) store credentials outside the database →
#3314345: Integrate with Encrypt for password storage →
#3298363: Encryption settings can lead to WSOD →
#3284083: Add reporting when module is enabled but set inactive →
#3252427: Provide token support for email addresses used by SMTP config →
Nice to haves but not sure will make it in:
https://www.drupal.org/project/smtp/issues/2920034 →
https://www.drupal.org/project/smtp/issues/2826189
🐛
"Disabled fields are overridden in site-specific configuration file" Warning
Needs work
Active
1.0
Code
@japerry, note that ✨ Implement OAuth to support GMail/GSuite accounts Needs review is proposing a module architecture refactoring. Probably the refactoring could be split out from that ticket. I would do that if you are OK with the approach and you provide support to merge it. Otherwise it's only a waste of time. Let me know