Brandwave

AI email assistants:Which brands are most popular in search?

In August 2026, Superhuman was the most searched among AI email assistants worldwide, with an estimated 110K branded searches and 78.9% estimated Share of Search within this set. These are worldwide searches for English-language branded terms.

Share of Search, August 2026
  1. Superhuman78.9%
  2. Shortwave10.6%
  3. SaneBox5.8%
  4. Mailbutler4.7%

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Share of SearchLeaderboard

Compare the AI tools that help manage and write email. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time.

Share of Search among AI email assistants worldwide, by month

Share of Search by month for Superhuman, Shortwave, SaneBox, Mailbutler. The figures are in the table below the chart.

View monthly share of search table
MonthSuperhumanShortwaveSaneBoxMailbutler
Oct 202579.2%10.6%7.1%3.1%
Nov 202582.2%9%6.1%2.7%
Dec 202579.7%10.7%7.1%2.6%
Jan 202680.6%10.8%5.9%2.6%
Feb 202680.7%10.8%5.9%2.6%
Mar 202681.9%11%4.9%2.2%
Apr 202678.8%12.9%5.7%2.5%
May 202679.2%13%5.8%2%
Jun 202677.2%10.3%6.9%5.6%
Jul 202680.1%13.1%4.8%2.1%
Aug 202678.9%10.6%5.8%4.7%
Sep 2026————

This month’s ranking, August 2026

  1. 1.Superhuman

    78.9%

    Held 1st. 110K estimated branded searches, +48.6% vs prior month. Share -1.2 points.

  2. 2.Shortwave

    10.6%

    Held 2nd. 14.8K estimated branded searches, +22.3% vs prior month. Share -2.5 points.

  3. 3.SaneBox

    5.8%

    Held 3rd. 8.1K estimated branded searches, +84.1% vs prior month. Share +1 points.

  4. 4.Mailbutler

    4.7%

    Held 4th. 6.6K estimated branded searches, +247.4% vs prior month. Share +2.7 points.

Compare search popularity between leading brands

Which brand is most popular in search among AI email assistants worldwide?

In August 2026, Superhuman was the most searched among AI email assistants worldwide, with an estimated 110K branded searches and 78.9% estimated Share of Search within this set. Shortwave is in 2nd place, 68.2 percentage points behind at 10.6% Share of Search.

Global AI email assistants, last 12 months ending September 2026
BrandShare of SearchPeakLowRank
Superhuman79.2% → 78.9%82.2%Nov 202577.2%Jun 20261st
Shortwave10.6%13.1%Jul 20269%Nov 20252nd
SaneBox7.1% → 5.8%7.1%Dec 20254.8%Jul 20263rd
Mailbutler3.1% → 4.7%5.6%Jun 20262%May 20264th

Each finding as a sentence

  • Across the 11 months ending August 2026, SaneBox’s estimated Share of Search among AI email assistants worldwide decreased from 7.1% to 5.8%.
  • Across the 11 months ending August 2026, Mailbutler’s estimated Share of Search among AI email assistants worldwide increased from 3.1% to 4.7%.
  • Across the 11 months ending August 2026, Superhuman’s estimated Share of Search among AI email assistants worldwide peaked at 82.2% in November 2025 and was lowest at 77.2% in June 2026.
  • Across the 11 months ending August 2026, Shortwave’s estimated Share of Search among AI email assistants worldwide peaked at 13.1% in July 2026 and was lowest at 9% in November 2025.
  • Across the 11 months ending August 2026, SaneBox’s estimated Share of Search among AI email assistants worldwide peaked at 7.1% in December 2025 and was lowest at 4.8% in July 2026.
  • Across the 11 months ending August 2026, Mailbutler’s estimated Share of Search among AI email assistants worldwide peaked at 5.6% in June 2026 and was lowest at 2% in May 2026.
  • Across the 11 months ending August 2026, Superhuman and Shortwave held steady: their estimated Share of Search among AI email assistants worldwide each moved less than 0.5 percentage points.

How did search popularity change for AI email assistants worldwide in August 2026?

  1. In August 2026, Mailbutler gained estimated Share of Search among AI email assistants worldwide, from 2.1% to 4.7%.

  2. In August 2026, SaneBox gained estimated Share of Search among AI email assistants worldwide, from 4.8% to 5.8%.

  3. In August 2026, Shortwave lost estimated Share of Search among AI email assistants worldwide, from 13.1% to 10.6%.

  4. In August 2026, Superhuman lost estimated Share of Search among AI email assistants worldwide, from 80.1% to 78.9%.

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