A study reveals the phrases people REALLY hate to see in their inbox.

Researchers found that 25 percent of people believe ‘Not sure if you saw my last email’ is the most annoying phrase, followed by the phrase ‘Per my last email’.

They also discovered that people find endless follow-up emails to be a pet peeve.

Researchers surveyed more than 1,000 white-collar workers and discovered that the most-hated email phrase is ‘Not sure if you saw my last email…’.

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The third ‘most annoying phrase people use via email for work’ was ‘per our conversation’ at 11 percent.

Aside from avoiding these phrases, Adobe also provided some helpful etiquette tips on how not to drive other email users’ crazy.

About 45 percent of users said they were most peeved by people who send emails too often, while 33 percent of users said they were annoyed when they receive recommendations for products that don’t match their interests.

Still, another 22 percent said they didn’t want to receive offers or coupons that have already expired.

Finally, 17 percent of respondents said they hated when the sender spelled their name incorrectly.

31 percent of respondents preferred talking in person with their work colleagues.

Emailing was also the top mode of communication for 31 percent of respondents, followed by phone calls, instant messaging and file sharing services.

Bosses may want to take note that video conferencing came in last at just 3 percent.