The phrase "correspondence exchange" is correct and usable in written English.
It can be used when referring to the act of exchanging messages or letters between parties.
Example: "The correspondence exchange between the two organizations helped clarify their objectives."
Alternatives: "message exchange" or "letter exchange".
"One is also reminded that this is private correspondence exchanged between two teenaged boys in the late 1930s and the early 40s.
The latter include the correspondence exchanged between Zoroastrians of Iran and India and the treatise entitled ʾOlemā-ye Islām ("The Doctors of Islam"), with decidedly Zurvanite tendencies.
One day in the 1970s, a friend of one of Mr. Bérubé's neighbors salvaged from a Dumpster a cache of correspondence exchanged by a dozen gay G.I.'s during the war.
They initiated an e-mail correspondence, exchanging literary allusions and citations and discovering both had written about the same poem by Robert Frost, "The Silken Tent," about a beloved woman.
This sour assessment of the McCullers marriage does not keep Ms. Savigneau from quoting pages and pages of tedious correspondence exchanged by the couple during World War II, or from going on, at dreary and unnecessary length, about their ongoing spats and reconciliations and drunken high jinks.
After Edward left Berlin, the two maintained correspondence, exchanging manuscripts, fossils, and photographs.
Notes from these group discussions along with correspondence exchanged shortly after the workshop were used to clarify points and reach consensus.
Like virtually all of Alkan's correspondence, this exchange is now one-sided; all of his papers (including his manuscripts and his extensive library) were either destroyed by Alkan himself, as is clear from his will, or became lost after his death.
It was she who initiated the explicit erotic correspondence they exchanged when separated in 1909.
His correspondence includes exchanges with the poet Gwendolyn Brooks, the novelist Ralph Ellison and the scholar Houston A. Baker.
