Is there way to subscribe a topic’s replies by email?
Scenario: I’m “watching first post” in a channel. I see something I like. I reply “watch” (or “subscribe” or click a “follow” link etc), and am subscribed to replies to that single topic.
I understand that if I reply to it with a comment or “+1” I’ll be subscribed, but is there a way to subscribe without “liking” it?
Use the notification control on the topic to set your notification level for the topic. It is visible both near the timeline and at the bottom of the topic.
You will only be emailed about notifications if the website has not seen you active in a web browser in the last 10 minutes.
Sorry to be clearer: is there a way to subscribe by email without liking it?
The answer remains the same. Use the topic notification level control — that has nothing to do with “liking”. Whether or not you get an email depends on whether your web browser touched the website in the last 10 minutes.
I love you and your work dearly, but this doesn’t address the question.
Q: “Can I do x by email?”
A: “You can do x by visiting the website.”
I do not understand your question, sorry.
I think I understand - You’re asking if there are ways of changing the notification control through email only by a special reply (similar to “+1” response).
There is currently no “special” reply by email to subscribe without liking or responding; For that action it’s only available through the web app, but it is a nice suggestion.
EDIT: TIL, this is possible (below). Even while following Discourse’s development pretty closely I still miss some of these real cool ninja features!
I can’t speak to exactly what the OP was thinking of, but it would make sense to me that if you have turned on the Watching First Post mode for a category, then the email could include a button/link to directly watch the topic. Underneath the Visit Topic button maybe there could be another saying “Watch this topic to be sent emails for all replies.”
Perhaps there could also be a little explanation sentence in the footer too: “You received this email because someone replied to you/you are watching the topic/you are watching the category/you have requested notifications for new posts in this category.”
I don’t think that’s entirely true, @sam added some kind of ninja expert mode magic email reply command words but I don’t know where they are documented.
Yeah this is not documented. You can reply with the word watch to watch a topic and mute to mute a topic.
Ok this request makes more sense now @eddowding there you go ↑ ↑ ↑
Boom! Sorry for the dealy - had to be afk for a few.
This is exactly what I was after, thank you @sam for the code and @Dannii for the translation 
So next related question: is it possible to insert a link? I know we can edit templates, but does that email customisation have access to the reply key? So href=mailto:[reply-key]@[domain]?subj=[subj]&body=watch ?
Unfortunately after reading through https://github.com/discourse/discourse/blob/19e3b3b1bce96787e27dd59c424605a43c7bf5db/lib/email/message_builder.rb I don’t think you have a reply-key or even reply email address discrete var to use.
Maybe for the first few month add a generic link for “Getting the best out of your email experience” and add that to the bottom of all the emails. You can put a full cheat sheet there including explaining about various user settings etc.
Checking to see if there is any development update on the reply* option for email addresses. Also would be awesome way to allow people to reply to specific on-going topics via email.
Any further documentation on this? Would it be possible for me to replace watch with subscribe?
これに戻ってきましたが、これらのオプションが可能であることがわかりました。
+1 または like : 投稿に「いいね！」を付けますwatch : トピックをウォッチしますtrack : トピックをトラッキングしますmute : トピックをミュートしますこれらをメールラッパーテンプレート内のクリック可能なリンクとして設定できるかどうかについて、何かアップデートはありますか？（mailto: をリプライキーと共に生成するため）（href=mailto:[reply-key]@[domain]?subj=[subj]&body=watch のように）
これは非常に古いですが、適切に作成されたメールを使用してトピックを追跡できるようになりましたか？
私たちのユースケースでは、どんなに説得、説明、指示をしても、事実上のメーリングリストとして使用している重要なトピックを監視できないユーザーがいます。
購読したいトピックの簡単なmailtoリンクがあれば素晴らしいでしょう。現在、そのトピックからメールが送信されていないため、返信できません。
これは以前にもこちらでリクエストされています: Change notification level with a link
しかし、残念ながらその機能には何も進展がありませんでした。