email header don't thread - SERP Analysis

https://stackoverflow.com/questions/71342254/which-headers-to-set-when-sending-emails-with-an-api-to-avoid-emails-to-be-threa

https://www.reddit.com/r/salesforce/comments/os6njg/email_headerbased_threading_broken/

https://mailtrap.io/blog/email-headers/

https://webapps.stackexchange.com/questions/965/how-does-gmail-decide-to-thread-email-messages

https://meta.discourse.org/t/discourse-emails-not-threaded-properly-in-some-email-clients/44444

https://postmarkapp.com/support/article/1276-threading-unthreading-messages

https://blog.mutantmail.com/unraveling-the-thread-index-email-header-mystery/

https://trailhead.salesforce.com/trailblazer-community/feed/0D5KX00000J5NLO0A3

https://www.mailercheck.com/articles/how-to-read-and-understand-email-headers

https://help.salesforce.com/s/articleView?id=service.support_email_to_case_threading.htm&language=en_US&type=5

https://help.front.com/en/articles/2039

https://learn.microsoft.com/en-us/answers/questions/1522942/how-to-stop-message-headers-growing-too-long-in-ou

https://superuser.com/questions/1351430/what-does-outlook-need-to-recognize-a-thread

https://blog.mutantmail.com/unraveling-the-mystery-of-the-handy-in-reply-to-email-header-field/

https://discussions.apple.com/thread/586975

https://portal.smartertools.com/community/a92082/mails-being-received-the-to-from-and-subject-headers-are-missing.aspx

https://learn.microsoft.com/en-us/answers/questions/488556/why-is-orignal-message-header-is-lost-in-outlook-r

https://support.mozilla.org/en-US/questions/1148852

https://meta.discourse.org/t/emails-are-not-threaded-in-outlook-2013/16501

https://forum.talkyard.io/-700/threading-for-email-notifications

https://community.atlassian.com/forums/Jira-questions/Email-sent-from-Jira-doesn-t-add-thread-value-in-email-header/qaq-p/1728247

https://discussions.apple.com/thread/252960153

https://www.phpbb.com/community/viewtopic.php?t=2130618

https://lists.mailman3.org/archives/list/mailman-users%40mailman3.org/thread/CY4XRT25GXDA7FM35BUTXMBNWMPHIKDV/

https://support.mozilla.org/en-US/questions/1206976

https://help.relativity.com/RelativityOne/Content/Relativity/Analytics/Email_thread_visualization.htm

https://forum.inductiveautomation.com/t/email-conversation-thread/82378

https://superuser.com/questions/1517129/do-outlook-emails-or-email-threads-have-a-unique-identifier-hash-that-can-be-use

https://discourse.paraview.org/t/should-we-remove-email-headers-and-footers/1205

https://www.ombulabs.com/blog/rails/emails/tutorial/send-emails-that-thread-with-rails.html

https://forum.emclient.com/t/enhancement-when-forwarding-messages-missing-references/90460

https://support.google.com/mail/thread/137115126?hl=en&msgid=139053037

https://community.cvent.com/forums/community-home/digestviewer/viewthread?GroupId=13&MessageKey=eea95766-fb23-4f55-88a0-afd0fe02ca96&CommunityKey=693148f0-28e3-495e-a369-16642c2a4f4f

https://forum.osticket.com/d/494-email-header-reply-to-is-ignored

https://managing.blue/2007/12/11/trying-to-make-use-of-outlooks-thread-index-header/

https://community.squareup.com/t5/Troubleshooting/The-logo-and-header-image-in-my-email-campaign-does-not-show-up/m-p/81616

https://forum.mautic.org/t/ability-to-send-a-campaign-email-reply-on-a-previous-email-thread/10910

https://www.youtube.com/watch?v=TZhwO_VSTxI

https://community.make.com/t/reply-to-the-same-email-thread-insted-of-sending-a-new-email/61628

https://www.mailmodo.com/guides/email-thread/

https://forum.k9mail.app/t/enhancement-request-to-field-in-message-header/7472

https://invisioncommunity.com/forums/topic/478097-message-id-header-problems/

https://forum.vivaldi.net/topic/64310/printing-mail-with-header-information

https://community.metaspike.com/t/how-to-determine-email-client/119

https://forum.dmarcian.com/t/google-dkim-question-as-i-look-at-email-headers/1875

https://forum.bestpractical.com/t/from-line-included-in-attachment-headers/40742

https://community.constantcontact.com/t5/Get-Help/Text-contained-in-body-of-email-appears-in-header/m-p/388226

https://community.claris.com/en/s/question/0D50H00006ezFlISAU/email-header-malformed-when-using-sendmail

https://forum.uipath.com/t/invoke-code-activity-error-get-date-from-headers/525968

https://nathanbransford.com/blog/2021/01/we-need-to-talk-about-email-thread-etiquette

https://talk.plesk.com/threads/plesk-default-generate-domain-set-in-email-header-helo.374481/

https://hmailserver.com/forum/viewtopic.php?t=42723

https://community.hubspot.com/t5/Email-Marketing-Tool/Random-Email-Headers-Changed-on-ALL-emails-How-to-fix/m-p/1037316

https://help.relativity.com/RelativityOne/Content/System_Guides/User_quick_reference/Analytics/Email_threading_and_TND_setup_basics.htm

https://forum.asana.com/t/include-section-headers-in-email-notifications/346196

https://bensoftware.com/forum/discussion/2481/smtp-header

https://invisioncommunity.com/forums/topic/476522-how-to-shrink-email-header-logo/

https://support.google.com/a/thread/307893735/i-want-to-see-all-acceptable-gmail-headers?hl=en

https://forum.emclient.com/t/conversations-and-threads-suggestions/89546

https://discuss.freedombox.org/t/removing-client-ip-from-email-header/3286

https://talk.dynalist.io/t/email-to-inbox-feature-stripping-out-valuable-information/6277

https://thinkdfir.com/2020/12/28/metaspike-ctf-week-2-as-per-my-previous-email/

https://www.vbforums.com/showthread.php?899945-RESOLVED-Create-Outlook-Email-Thread

https://www.youtube.com/watch?v=6YA16ZGs1zA

https://forum.k9mail.app/t/some-email-contents-not-correctly-displayed/4447

https://forums.zimbra.org/viewtopic.php?t=31923

https://developers.mailersend.com/guides/creating-email-threads

https://hmailserver.com/forum/viewtopic.php?t=37756

https://serverfault.com/questions/1161750/smtp-header-confusion-delivered-to-and-to-are-different

https://community.spiceworks.com/t/how-to-view-email-header-from-exchange-powershell/940559

https://forum.invoiceninja.com/t/edit-email-header-logo/15140

https://forum.spamcop.net/topic/14800-resolved%C2%A0yahoo-problems-cant-find-headers/

https://community.hubspot.com/t5/Tips-Tricks-Best-Practices/Email-Header/m-p/983151

https://discuss.4d.com/t/need-to-add-header-to-email-with-transporter/25677

https://forums.slipstick.com/threads/86643-header-information-missing-in-one-account-only/

https://forum.uipath.com/t/how-to-obtain-internet-headers-from-outlook-without-using-any-marketplace-activity/427493

https://www.mailenable.com/forum/viewtopic.php?t=3920

https://forum.scriptcase.net/t/i-cant-give-an-email-header-from-sc-mail/13726

https://www.sitepoint.com/community/t/outlook-how-to-delete-headers-not-as-simple-as-it-sounds/1833

https://community.dynamics.com/forums/thread/details/?threadid=dda97165-ccf7-4a5a-84be-59988bc81c04

https://www.add-in-express.com/forum/read.php?FID=5&TID=895

https://forum.mautic.org/t/personal-email-should-not-contain-an-unsubscribe-header-custom-email/18525

https://www.quora.com/When-should-you-change-an-email-thread-s-subject-line-Should-you-only-change-the-subject-line-if-you-sent-the-initial-email

https://discourse.mailinabox.email/t/spamassassin-x-spam-report-leaking-other-email-addresses-into-my-headers/5172

https://forum.mailwizz.com/threads/x-sender-sender-in-the-email-header.68/

https://forum.osticket.com/d/88487-is-it-possible-to-display-email-header-in-ticket

https://sourceforge.net/p/fetchmail/mailman/fetchmail-users/thread/4F29BB7F.1050400%40gmx.de/

https://discourse.devontechnologies.com/t/relation-between-a-mail-and-its-reply/71673

https://community.unix.com/t/how-to-hide-the-ip-in-the-email-header/139182

https://forum.proxmox.com/threads/replace-multiple-items-in-email-notification-header.130235/

https://www.youtube.com/watch?v=W4BJCmif2c0

https://forum.eset.com/topic/10678-x-esetid-tag-applied-to-email-headers/

https://community.spiceworks.com/t/trying-to-understand-the-header-of-a-spam-phishing-email/941245

https://liferay.dev/ask/questions/question/6465588

https://github.com/gabime/spdlog

https://forum.directadmin.com/threads/empty-mails-empty-headers.40297/

http://www.emaildiscussions.com/showthread.php?t=68977

https://security.stackexchange.com/questions/102321/what-information-should-be-scrubbed-before-posting-email-headers-in-public

https://www.vbforums.com/showthread.php?322884-Email-Header-for-Outlook-Flag-for-Follow-Up-RESOLVED