Is your coffee tasting bitter or sour? ☕ (Here’s how to fix it)

Preview text: Master your brew ratio and grind size with our ultimate quick-reference guide.

Wednesday, Sep 9, 2026 at 9:21 AM EasternKlaviyo

Function Coffee CoIs your coffee tasting bitter or sour? ☕ (Here’s how to fix it)

Fit to screenFull size

Is your coffee tasting bitter or sour? ☕ (Here’s how to fix it) - email from Function Coffee Co

Using this email in an article? Credit: Function Coffee Co email via They Sent It, with a link to this page. Full-size image

Subject: Is your coffee tasting bitter or sour? ☕ (Here’s how to fix it)
Preview text: Master your brew ratio and grind size with our ultimate quick-reference guide.
From: hello@functioncoffeeco.com
Brand: Function Coffee Co
ESP: Klaviyo
Sent: Wed Sep 9, 2026, 9:21 AM ET
Sent to: functioncoffeeco.com, northlakecoffeeshop.com
Size: 40 KB
Images: 7
Links: 11, 6 of them buttons
Subject length: 63 characters

Against Function Coffee Co's usual

Sent in the 9 AM hour, which holds 8% of its emails; 17% arrive in the 5 PM hour. The subject is 63 characters; its average is 40.

Email headers

What the brand's servers put on this email. Our receiving servers, the address we subscribed with and unsubscribe links are left out.

From: Function Coffee Co <[email protected]>
Subject: Is your coffee tasting bitter or sour? ☕ (Here’s how to fix it)
Date: Wed, 09 Sep 2026 13:21:04 +0000
Message-ID domain: klaviyomail.com
Return-Path domain: k3.send.functioncoffeeco.com
DKIM signature: d=shared.klaviyomail.com s=def1; d=send.functioncoffeeco.com s=mtd1
List-Unsubscribe: Present, one-click

Servers it passed through, newest first

from (unnamed) by kmta-mta-blue-….servers.clovesoftware.com with SMTP

Other sending headers (names only): X-Mailer-Info-Extra2, X-Mailer-Info, X-Mailer-Info-Extra, X-Kmail-Account, X-Kmail-Message, X-Kmail-Ops, X-Report-Abuse

Report this email

Sent just before and after

	Sep 29, 2026 5:49 AM	Today Only: 15% OFF for National Coffee Day ☕
	Sep 22, 2026 5:11 PM	Two of your favorites just sold out 👀
	Sep 16, 2026 1:18 PM	We Pulled 5,000 Shots. Here’s What Works. ☕
	Sep 9, 2026 9:21 AM	Is your coffee tasting bitter or sour? ☕ (Here’s how to fix it) (this email)
	Sep 7, 2026 5:18 AM	Re: Labor Day Sale
	Sep 7, 2026 5:18 AM	Re: Labor Day Sale
	Sep 3, 2026 12:24 PM	Did you see something you liked?