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About Interfolio Letter Quality Check for Dossier

Interfolio lets applicants know if there are quality issues regarding the received letter of recommendation. The quality check takes at most four days. For premium Dossier Deliver users, the quality check are processed as soon as they arrive in your account or, for the letters that are already within your Dossier, when your account is upgraded to Dossier Deliver.

  • Every time new letters are requested and received, Interfolio checks those letters for quality.
  • Interfolio provides assistance communicating errors to letter writers in the form of email and in-product views.
  • The process provides reassurance when your letters are okay and ready to deliver. An indicator of the elements missing from letters appears prior to submission.

Due to the current COVID-19 outbreak, there may be a delay in uploading letters mailed to Interfolio. Letters received electronically will continue to be uploaded and processed as usual.  Additionally, there may be a delay with the letter quality check process for new letters of recommendation. 


Interfolio Quality Check

What does Interfolio check during the Quality Check process?

Interfolio will check the following items when performing the quality check of letters:

  • If the file containing the letter is viewable
  • If the letter has a signature
    • Physical Signature
    • Digital Signature
  • If the letter is on official letterhead
    • Includes logo/seal
  • If the letter is written about the correct person
  • If the document is actually a letter of recommendation
  • Cosmetic issues

Applicants will be notified of the results of the quality check process within four business days.


Interfolio employees will never disclose the specific or summarized contents of the letter of recommendation. Through the Quality Control process, Interfolio will notify applicants of specific details or qualities of their letter (letterhead, signature, etc), as described in the article below. If you have any questions after reading this article, please reach out to our Scholar Services team at


Types of Signatures that Interfolio Identifies through the QC process:

Interfolio understands that signatures are in most cases a requirement. Interfolio will let you know if the signature exists and what type of signature is in your letter. Most institutions, fellowship programs, and various other opportunities may require the traditional handwritten signature. If by chance the letter includes another type of signature or no signature at all, it is your responsibility to get in contact with the letter writer/evaluator in order to get that letter updated with the proper formatting.


Select the tabs below to view more information on different types of signatures.

Handwritten signatures

The letter writer/evaluator has put pen to paper and wrote their signature on the letter. Because the signature is written in by the letter writer, questions may arise on how to submit this letter. If choosing to have the letter writer submit their letter electronically, the letter writer will need to have the ability to scan their document to a computer, save it, and then submit it through the emailed request they receive. Letter writers can also mail their letter to Interfolio if the printed form option of delivery is chosen in the letter request form. Below are examples of a handwritten signature:

A signature (/ˈsɪɡnətʃər/; from Latin: signare, "to sign") is a handwritten (and often stylized) depiction of someone's name, nickname, or even a simple "X" or other mark that a person writes on documents as a proof of identity and intent. The point is the handwritten signature has to be written on the document by the signer.


Digital Signature

The digital signature is simply a small block of data that is attached to documents signed. It is generated from a digital ID, which includes both a private and public key. The private key is used to apply the signature to the document, while the public key is sent with the file. Digital signatures usually include a mark or stamp to authenticate it. Most organizations will accept a digital signature in place of a handwritten one. A digital signature is a type of electronic signature that encrypts documents with digital codes that are particularly difficult to duplicate. Here are a few examples below:


No Signature

When the writer typed their name in the signature block and changed the font to a more stylized type font, or does not include anything in the signature block. These are not considered a signature. Some examples of what would be considered a document without a signature are:


When will Interfolio Quality Check?

Quality Check Time is four business days. A confidential letter of recommendation enters the QC process in two ways:

  1. When a letter of recommendation is used in a delivery, the document will be quality checked at that time.
  2. Once a user upgrades to Dossier Deliver, a quality check all of letters that were submitted on March 2018 and after will be performed. If a letter was submitted prior to March 2018 and it needs to be Quality Checked, either include it in a delivery or reach out to us directly to have it Quality Checked.

You do not have to wait until your letter is Quality Checked in order to use it in a delivery. We will QC all letters included in a delivery.