Hi @Evelien Bos
Based on my tests, the email sender in Word Mailing is related to the Primary Account in your Outlook profile.
So, I suggest you create a new profile in Outlook.
- Go to Outlook > File > Account Settings > Change Profile > Cilic "OK" toc lose Outlook.
- Re-lauch Outlook > Options > New > Name it, then enter the mail account that you need.
Use Outlook with this profile. You can also switch back to the original profile later.
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