Gmail is threading emails and completely changing the header

hteumeuleu / email-bugs

Email quirks and bugs

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Gmail is threading emails and completely changing the header #126

Open thelefflaNA opened 1 year ago

thelefflaNA commented 1 year ago

I have a weird issue where emails are threading in gmail when sent from Iterable and sparkpost.

nicolemerlin commented 1 year ago

Hi @Jakestreeteasy, so do they have different subject lines?

thelefflaNA commented 1 year ago

Hi @Jakestreeteasy, so do they have different subject lines?

Yup, things we have gone through: There are different message headers being passed, Different SLs Different reply to addresses. Seems to only be happening on Iterable with sparkpost Iterable without sparkpost: no issue Other ESPs deployed with sparkpost also not happening.

hteumeuleu commented 1 year ago

It would help tremendously if you had reproducible examples. Can you share any code?

thelefflaNA commented 1 year ago

The only thing I can really share is the .eml file Sincetha contains information you could have gotten by sending yourself the email.

I have tried all the "fixes" I am aware of for adding space to the preview text, and this only happens after the email deploys into Gmail threads on the third send.

Updates to Your Saved Search - 2_23_23 (2).zip

thelefflaNA commented 1 year ago

To give some additional context. The preheader exists within the emails and is hard coded above the content, if a user gets another update the threaded email preview text changes to code further down in the email

sshahs commented 1 year ago

It appears your subject lines are the same on each send?

Also, try turning off the 'Conversation view' option in Gmail: