Call center software provider Five9 (NASDAQ: FIVN) will be reporting results tomorrow afternoon. Here's what to expect.

Last quarter Five9 reported revenues of $230.1 million, up 16% year on year, beating analyst revenue expectations by 2.5%. It was a mixed quarter for the company, with a beat of analysts' revenue expectations. On the other hand, its revenue guidance for next quarter underwhelmed and its gross margin decreased.

Is Five9 buy or sell heading into the earnings? Read our full analysis here, it's free.

This quarter analysts are expecting Five9's revenue to grow 14.3% year on year to $238.1 million, slowing down from the 20% year-over-year increase in revenue the company had recorded in the same quarter last year. Adjusted earnings are expected to come in at $0.49 per share.

Majority of analysts covering the company have reconfirmed their estimates over the last thirty days, suggesting they are expecting the business to stay the course heading into the earnings. The company has a history of exceeding Wall St's expectations, beating revenue estimates every single time over the past two years on average by 4%.

Looking at Five9's peers in the productivity software segment, some of them have already reported Q4 earnings results, giving us a hint of what we can expect. 8x8's revenues decreased 1.8% year on year, missing analyst estimates by 1.3% and Appian reported revenues up 15.5% year on year, exceeding estimates by 3.2%. 8x8 traded down 3% on the results, and Appian was up 10.9%.

Read our full analysis of 8x8's results here and Appian's results here.

There has been positive sentiment among investors in the productivity software segment, with the stocks up on average 2.9% over the last month. Five9 is down 9.1% during the same time, and is heading into the earnings with analyst price target of $88.1, compared to share price of $72.5.

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