Mailgram rhymes with:
cablegram, milgram, anagram, cablegram, centigram, diagram, electrocardiogram, engram, epigram, histogram, hologram, kilogram, logogram, mammogram, microgram, milgram, milligram, monogram, pegram, polygram, program, programme, reprogram, sonogram, telegram, wolfgram
Mailgram sounds like:
mellgren, milacron, milgram, milligram, mulkern