#lelta- vb. "send", attested in the past tense with pronominal suffixes: leltanelyes "you sent him" (VT47:21)
Quenya
lelta-
verb. to send, *(lit.) cause to go
lelta-
send
lenta-
send
[#lenta- vb. "send", attested in the past tense with pronominal suffixes: lentanelyes "you sent him". Changed by Tolkien to #lelta-, q.v. (VT47:22, 21)]
menta-
send, cause to go
menta- (1) vb. "send, cause to go" (in a desired direction) (VT41:6, VT43:15). A similar-sounding primitive verb mentioned in PE17:93 is said to have past and perfect forms that would produce Quenya *mennë*, eménië, but here Tolkien seems to be discussing a distinct intransitive verb "go" and its Sindarin descendants, and Quenya menta- rather belongs to the causative (transitive) verbs which according to the same source has "weak" past-tense forms (in -në, hence mentanë "sent", and likely ementië** as perfect "has sent").
A verb for “send” appearing in its past form in the phrase yenna leltanelyes “to whom you sent him” in notes from the late 1960s (VT47/21). The word in the sentence is the 2nd-sg-polite past form with a 3rd singular object: lelta-ne-lye-s “send-(past)-you-him”. It was originally given as {tultanelyes}, revised to {lentanelyes} and finally leltanelyes, the first being causative tulta- < √TUL + tā [make come], the second lenta- < (perhaps) √LEN + tā [make journey?] and the last lelta- < √DEL + tā [make go]. As such, lelta- is probably a ta-causative variant of lelya- “go, travel”.