Popeyes mocks Chick-fil-A for accidentally emailing customers about National Sandwich Day before realizing it was on a Sunday

• Chick-fil-A emailed customers to apologize for an attempt to promote National Chicken Sandwich Day, which takes place on a Sunday — when Chick-fil-A locations are closed. 
• Popeyes quote-tweeted a screenshot of the email and added: "seriously... y'all good? @ChickfilA"
• Popeyes' chicken sandwich will return to menus on National Sandwich Day on Sunday, November 3. 
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Popeyes is mocking Chick-fil-A as the chicken sandwich wars heat up once again before National Sandwich Day. 

On Thursday, Chick-fil-A emailed customers to apologize for a prior email about National Chicken Sandwich Day, which takes place on November 3. 

"We recently sent an email that included a message about National Sandwich Day, which naturally we were very excited about," the email reads. "We didn't realize it falls on Sunday when we are closed. We apologize for the confusion and hope to see you soon (Monday-Saturday)." 

Some customers took to social media to share the email — including one person who brought the incident to Popeyes' attention. Popeyes quote-tweeted a screenshot of the email and added: "seriously... y'all good? @ChickfilA"

Popeyes is going all in on National Sandwich Day this year, with the return of the chain's popular chicken sandwich returning on Sunday, November 3.

The chicken chain kicked off the chicken-sandwich wars in August with a "y'all good" tweet directed at Chick-fil-A soon after the introduction of Popeyes chicken sandwich. Two weeks later, the chain had completely sold out of its supply of chicken sandwiches. 

With the chicken sandwich returning to menus on Sunday, Popeyes took a jab at Chick-fil-A in a video announcing the return of the sandwich, showing a man adding the text "Open Sunday" to a Popeyes sign. 

"To be honest, it was a mere coincidence that this year's National Sandwich Day happens to be on a Sunday," Bruno Cardinali, Popeyes' head of marketing for North America, told Business Insider. 

Chick-fil-A is never open on Sundays, in keeping with the Christian faith of the chain's founder and his family. 

"Closing our business on Sunday, the Lord's Day, is our way of honoring God and showing our loyalty to Him," Chick-fil-A founder Truett Cathy wrote in his book "Eat Mor Chikin: Inspire More People." 

Cathy continued: "My brother Ben and I closed our first restaurant on the first Sunday after we opened in 1946, and my children have committed to closing our restaurants on Sundays long after I'm gone. I believe God honors our decision and sets before us unexpected opportunities to do greater work for Him because of our loyalty." 

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