Looking on the internet deeply has found these results:

attach the file to this email is the most popular phrase on the web.

attach the file in this email 14 results on the web	attach the file to this email 134,900 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Attach file to email (repeat as needed) The files in %1 have been listed. To attach the contents of this directory, either attach the files in this directory individually, or create an archive of the directory and attach it. I have to break open the files in storage. The file in the Vault was... erased. Open your mail client and attach the file in the mail. This item is only displayed, when the plugin Mail files in & kate;'s settings is loaded. One of the files in the morning research report caught my eye. The files in this case fill 60 thick volumes.	Right, but they can delay delivering the files to us. Select the file format of the image files to be sent. Using dvipdfm to export the file to PDF To attach the contents of this directory, either attach the files in this directory individually, or create an archive of the directory and attach it. Do you want to allow this site to attach the following files to the email message? & Click Here to Select the File to Restore... Please copy the file to your local computer and check the file permissions. Attach file to email (repeat as needed)

attach the file in this email

14 results on the web

attach the file to this email

134,900 results on the web

More popular!

Attach file to email (repeat as needed)
The files in %1 have been listed.
To attach the contents of this directory, either attach the files in this directory individually, or create an archive of the directory and attach it.
I have to break open the files in storage.
The file in the Vault was... erased.
Open your mail client and attach the file in the mail. This item is only displayed, when the plugin Mail files in & kate;'s settings is loaded.
One of the files in the morning research report caught my eye.
The files in this case fill 60 thick volumes.

Right, but they can delay delivering the files to us.
Select the file format of the image files to be sent.
Using dvipdfm to export the file to PDF
To attach the contents of this directory, either attach the files in this directory individually, or create an archive of the directory and attach it.
Do you want to allow this site to attach the following files to the email message?
& Click Here to Select the File to Restore...
Please copy the file to your local computer and check the file permissions.
Attach file to email (repeat as needed)