Updates the contact_us_zulip_cloud and contact_us_self_hosted email
macros to have the "mailto" scheme in the anchor tag for the support
email address.
Also updates the Zulip Cloud version for the account_registered
support email link, which has a slightly different format/text than
the macro.
Several onboarding emails sent to new users/organizations used the
same "contact us" language. Adds new macros for the "contact us"
line for Zulip Cloud and self-hosted realms to eliminate repetition.
The suitable macro for Zulip Cloud vs self-hosted organizations is
decided conditionally, by checking corporate_enabled.
Fixes#24260.
Previously, we had an architecture where CSS inlining for emails was
done at provision time in inline_email_css.py. This was necessary
because the library we were using for this, Premailer, was extremely
slow, and doing the inlining for every outgoing email would have been
prohibitively expensive.
Now that we've migrated to a more modern library that inlines the
small amount of CSS we have into emails nearly instantly, we are able
to remove the complex architecture built to work around Premailer
being slow and just do the CSS inlining as the final step in sending
each individual email.
This has several significant benefits:
* Removes a fiddly provisioning step that made the edit/refresh cycle
for modifying email templates confusing; there's no longer a CSS
inlining step that, if you forget to do it, results in your testing a
stale variant of the email templates.
* Fixes internationalization problems related to translators working
with pre-CSS-inlined emails, and then Django trying to apply the
translators to the post-CSS-inlined version.
* Makes the send_custom_email pipeline simpler and easier to improve.
Signed-off-by: Daniil Fadeev <fadeevd@zulip.com>
Lauryn Menard
Ujjwal Aggarwal
Daniil Fadeev