email = concat(x, y, "@gmail.com")

X — take the first letter of each: 1. Carroll's poem where a vorpal blade goes snicker-snack 2. Shelley's sonnet on a desert ruin 3. The Old Testament wisdom book by Qoheleth 4. Milton's pastoral elegy mourning a drowned Cambridge classmate

Y — concatenate these two strings: 1. symbol of the element named for Scandinavia 2. an operatic solo