How many episodes were titles "voicemail"?
CREATE TABLE "table1_10610087_3" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text
);
SELECT COUNT("directed_by") FROM "table1_10610087_3" WHERE "title"='\"Voicemail\"';