Email & calendar
The most hated email & calendar tools, ranked
Among 2 email & calendar tools, the most hated are Outlook (66%), Gmail (23%). Hate score is the share of head-to-head votes where people chose to delete the tool.
Last updated October 5, 2026 · live data from 36,288 total votes
Compare email & calendar tools head to head
Frequently asked questions
What is the most hated email & calendar tool?
Outlook is the most hated email & calendar tool on MostHatedTools, with a 66% hate score across 572 votes, ahead of Gmail (23%).
What does hate score mean?
The percentage of head-to-head matchups a tool appeared in where voters chose to delete it. It is crowd-sourced sentiment, not a measure of quality.