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About Adding a Letterhead or Signature to a Letter (For Letter Writers)

It is recommended that letters be written on official letterhead, and include a hand-written or digital signature of the writer.


About Adding a Letterhead or Signature

Add Letterhead

The easiest way to include a letterhead is to have the writer type the letter in a template that is already formatted with the letterhead. Many universities and departments have standardized letterhead templates that are provided to professors and administrators. Most medical practices will also have letterhead templates for doctors and staff.

The easiest way to include a handwritten signature is to Print, Sign, Scan, and Upload the letter. It is recommended to use this process for professors or doctors who are less familiar with computer technology.


Contact the Interfolio Help Desk at or (877) 997-8807 for further support.


Add Hand Signature

  1. Print, sign, scan, and upload a hand-signed letter.
  2. Mail Interfolio a signed copy of the letter.

Add Digital Signature

  1. Adding a digital signature in MS Word
  2. Adding a signature to an Adobe PDF
  3. Add a signature using online services such as DocuSign, Adobe Sign, DocHub, and numerous others

With any of these services, simply generate the signature and add the signature to the letter of recommendation before uploading the signed copy to Interfolio.


Mail Letter

If unable to include a signature using one of the methods mentioned above, include a handwritten signature and mail the letter to Interfolio. Please mail letters to the following address:

1400 K Street NW
Suite 1100
Washington, DC 20005

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