correspondence
A relationship where each element in one set is paired with exactly one element in another set.
A strong similarity or connection.
A perfect match or similarity between two things.
A clear and immediate connection or similarity.
Communication exchanged via electronic mail.
Letters related to commercial activities.
Formal letters sent by an organization or government body.
Describes letters of a private nature between individuals.
Communication in the form of physical letters, as opposed to spoken or digital.
Similar to personal, emphasizing it is not for others to read.
Describes letters containing secret information not meant for public viewing.
Official communication between representatives of different countries.
A consistent and frequent exchange of letters.
A large amount of communication over a period of time.
A very large volume or quantity of letters.
A stack of letters.
A single letter or document.
Used to show a connection or similarity between two or more things.
Through the medium of writing and sending letters.
Similar to 'by correspondence', indicating the method of communication.
To dispatch a letter or communication.
Similar to 'deal with', often implying a professional responsibility.
To manage incoming letters, including reading and replying.
To write the recipient's details on a letter or to direct it to them.
To be engaged in a letter exchange with someone.
To reply to letters received.
To send and receive letters with someone.
To begin exchanging letters, often in a formal context.
Similar to 'keep up', often used in a more formal or professional context.
To maintain a regular exchange of letters.
To continue a letter exchange over time.
A course of study conducted by mail.
An educational institution that teaches by mail.