Are recommendation letters submitted by email accepted?

Yes, they can be. For the O-1, what matters in a recommendation letter is the credibility of its content, not the medium through which it arrives. A letter submitted by email can be accepted as long as it includes all formal elements and conveys the same seriousness as a printed document.

Ideally, the letter should follow a formal standard: letterhead, signature (original or authenticated digital), and complete information about the person signing it. If it is well prepared and, where appropriate, converted to an official format such as PDF, it is generally considered valid.

• All formal elements present (letterhead, signature, sender’s details).
• Same credibility as a printed document.
• Conversion to an official format, such as PDF, when it helps.

Keep in mind that each case is reviewed individually, and an inadequate format or missing information can count against the petition. For that reason, check the updated guidelines on the USCIS website and, when in doubt, consult a specialist to ensure your documents are in compliance.

About the author

Victoria Harper

Editor-in-Chief

Meet the author

As a journalist and lead editor at Visto n’ Visa, Victoria helps ensure that immigration topics are covered in a clear, trustworthy, and easy-to-understand way. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.