Commit Graph

6 Commits

Author SHA1 Message Date
Kailash Nadh 68afd61024 Add support for alternate plaintext body for e-mails.
This commit removes the Go html2text lib that would automatically
convert all HTML messages to plaintext and add them as the alt
text body to outgoing e-mails. This lib also had memory leak
issues with certain kinds of HTML templates.

A new UI field for optionally adding an alt plaintext body to
a campaign is added. On enabling, it converts the HTML message in
the campaign editor into plaintext (using the textversionjs lib).

This introduces breaking changes in the campaigns table schema,
model, and template compilation.
2021-01-30 18:49:47 +05:30
Kailash Nadh 6cf43ea674 Add generic HTTP postback `Messenger` support.
This is a major feature that builds upon the `Messenger` interface
that has been in listmonk since its inception (with SMTP as the only
messenger). This commit introduces a new Messenger implementation, an
HTTP "postback", that can post campaign messages as a standard JSON
payload to arbitrary HTTP servers. These servers can in turn push them
to FCM, SMS, or any or any such upstream, enabling listmonk to be a
generic campaign messenger for any type of communication, not just
e-mails.

Postback HTTP endpoints can be defined in settings and they can be
selected on campaigns.
2020-10-10 18:52:08 +05:30
Kailash Nadh ec097909db Add support for `List-Unsubscribe` header.
- Added as a setting in the settings UI.
- Refactor Messenger.Push() method to accept messenger.Message{}
  instead of a growing number of positional arguments.
2020-08-01 17:54:51 +05:30
Kailash Nadh 942eb7c3d8 Add settings UI and "hot reload" support to the app.
This is a major breaking change that moves away from having the
entire app configuration in external TOML files to settings being
in the database with a UI to update them dynamically.

The app loads all config into memory (app settings, SMTP conf)
on boot. "Hot" replacing them is complex and it's a fair tradeoff
to instead just restart the application as it is practically
instant.

A new `settings` table stores arbitrary string keys with a JSONB
value field which happens to support arbitrary types. After every
settings update, the app gracefully releases all resources
(HTTP server, DB pool, SMTP pool etc.) and restarts itself,
occupying the same PID. If there are any running campaigns, the
auto-restart doesn't happen and the user is prompted to invoke
it manually with a one-click button once all running campaigns
have been paused.
2020-07-21 00:23:57 +05:30
Kailash Nadh 9d3ca357f6 Integrate new SMTP pool lib 2020-05-16 23:25:37 +05:30
Kailash Nadh 9005bb6dad Move internal packages to 'internal' dir 2020-03-08 00:17:54 +05:30