Way to mail merge to send attachments

1. Use Word's Mail Merge feature to create emails.
2. If you need to add attachments, you can add them manually, email by email, or use a third-party tool (such as Mail Merge Toolkit or AbleBits Mail Merge) to add attachments automatically.
3. Ensure that the data source contains a field for the path or filename of the attachment so that it can be referenced during the merge.
4. if the mail volume is small, adding attachments manually is a simple and straightforward method; if the mail volume is large, it is recommended to use a third-party tool to improve efficiency.”