Dev Tools & Micro-SaaS
Webapps Stack Exchange · 2024-02-19
Which email headers make Gmail group replies into one thread
邮件头怎么写才能让 Gmail 把回复归并进同一会话
At a glance · 30-second read
- WhoWebapps Stack Exchange · 2024-02-19 · 1 replies
- The askWhich email headers make Gmail group replies into one thread
- The openingA deliverability+threading checker: paste raw headers, get fixes — sold as an API to sending platforms.
What was actually said
“Program-sent emails always start a new thread and users can't find history. No authoritative doc explains the References/In-Reply-To/Subject combination.”
— Webapps Stack Exchange · 2024-02-19 · webapps.stackexchange.com/questions/173922/email-hea…
Background and pain
The pain
Broken threading in transactional/support mail directly hurts conversion and support efficiency; every SaaS/e-commerce sender hits the same wall.
A buildable angle
The opening
A deliverability+threading checker: paste raw headers, get fixes — sold as an API to sending platforms.
How to validate it
- Read the whole thread and note the recurring scenarios — repetition is the density of the need.
- Search existing tools around "email / deliverability" and check which single step they actually cover.
- Put up a one-line landing page, share it back to Webapps Stack Exchange, and see whether anyone asks about pricing.
Existing options
Google 官方文档Stack Overflow 零散答案
More threads on this pain
- Feature request: chat with the model over emailOpenAI Developer Community · 2024-10-23
- Support emails get rejected silently — the team never sees themDiscourse Meta · 2020-09-12
- Spam hides in the BCC field — and Gmail can't filter on itWebapps Stack Exchange · 2025-04-20
- Where do I actually report phishing emails? No unified entry existsWebapps Stack Exchange · 2025-06-20
- Auto-summarize Google Voice SMS subjects in Gmail instead of 'New text message'Webapps Stack Exchange · 2025-02-23
From the thread · top comments
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