'In-Reply-To' - Email (Build-in) Module

Sorry I got to this late.

I can confirm setting both the MessageID in the “In-Reply-To” or “References” field (as an array or csv) will work.

Some email providers like Gmail prefers “In-Reply-To”, while others use the “References” field, so it is wise to just fill in both fields in case the recipient doesn’t use Gmail.

Here is my current setup:

You can also use the Gmail “Make an API Call” module to create a draft.

For more information and other related questions (like original copy and signatures), see

Hope this helps! Let me know if there are any further questions or issues.

Did you know, this forum has a Hire a Pro category, where you can post your request for off-site specialised help on other platforms (video call/screenshare/private messaging/etc.)? This may help you get your issue resolved faster especially if it is urgent. It is important to post your request in the Hire a Pro category, as forum members are not allowed to advertise their services (even offer FREE assistance to help) in other categories like here. Once you have posted in the Hire a Pro category, that will allow other members like me to provide booking links to our calendars for a free consultation and video assistance (including screenshare)!

@samliew

P.S.: Investing some effort into the Make Academy will save you lots of time and frustration using Make.

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