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Welcome!

MailMerge365 is an add-in for Microsoft 365 and Outlook. In order to use it please login with your Microsoft 365 account using the button below.

If you have not signed-up yet an account will be automatically created and linked to the account you're logging in with.

Recent changes

• Changes to settings 2025 - Update Nr. 4

MailMerge365 now saves client setting in the Office Roaming settings and are therefore persisted across clients.

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• Improvements to attachment handling 2025 - Update Nr. 3

MailMerge365 now supports niche file types better when sending them as attachments.

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• API Access to Unsubscriber Lists 2025 - Update Nr. 2

To facilitate an automated processing of unsubcsriber lists in third party systems, you can now enable API Access to your unsubscriber list which with a unique URL that will provide a list of the email addresses currently on your unsubscriber list.

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See full change log...
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