Content-Transfer-Encoding defines how the email body is encoded for transport. Learn common values like base64 and quoted-printable.
Content-Transfer-Encoding is a MIME header that tells email clients how the body content was encoded for safe transport across systems. Common encodings include base64 and quoted-printable.
Choosing the right encoding affects size and readability. Quoted-printable is common for text with special characters, while base64 is used for binary data like attachments.