I have a IFTTT recipe, which mails me on new posts on a certain subreddit. The subject looks like:

[IFTTT] {{Title}} via /r/{{Subreddit}}

In Gmail I have a filter that filters on from:([email protected]), which skips inbox and applies a label.

Now when e-mails come in, they have different subjects, but they still get merged into conversations—how do I stop that? Some e-mails get merged, others do not.

It seems that my question is the opposite of what Grouping Gmail messages with different subjects under the same conversation is trying to establish.

Edit: I'm now trying to throw away all mails in the filter, maybe that'll help.

Edit 2: Didn't help, I've received two emails, with different subjects, which are still combined into one conversation.

  • Look at the message headers (Show original). Is there an In-Reply-To or similar header? Aug 4, 2014 at 10:19
  • No, there is no header that contains the word Reply..
    – RedPixel
    Aug 4, 2014 at 11:09
  • If your custom filter is not set, do they still get grouped? Is there any chance you could provide two sample email header sources? Aug 6, 2014 at 1:03

1 Answer 1


I think I have resolved my problem.

I have replaced the subject line by {{Subreddit}} {{Title}} via /r/{{Subreddit}}, and now it does not merge them anymore..

To test whether the tag [IFFT] made them merge, I've tried mailing myself from a different address using a tag, but those were not merged.

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