Will ReplyWithHeader update for macOS in the future?

[andymachs]

The software hasn't been updated in a long time.
ReplyWithHeader for macOS, ReplyWithHeader for Windows, are all the best add-ons tool, Hope to keep update.
Thanks to Jeevatkm.

[jeevatkm]

@andymachs Thanks for reaching out.

Apple made it difficult to hook into compose message workflow from undocumented API. That's why I didn't get a way to support the past few macOS releases.
A few years ago, Apple started officially supporting MailExtension via MailKit SDK. I have been keeping an eye on yearly release updates. They still need to release significant API support. Last year, they made a few improvements to SDK.
I will explore it when I get a chance; if I could bring back RWH on macOS again, I would :)

Regarding the Thunderbird RWH add-on, it is maintained up-to-date - https://addons.thunderbird.net/en-us/thunderbird/addon/replywithheader/

[andymachs]

OK, Thanks to jeevatkm.
So many users love ReplyWithHeader in the world, it is the best tool to manage email reply header on Thunderbird and Apple mail. like Outlook.
I hope it will continue to be maintained and made even better, To provide a good experience for all users. All users will appreciate you.
Thanks again!!