Great product + amazing customer support
Super easy product to use. It does exactly what it says. The customer support is incredible.
By Regan K.
Saturday, November 7, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
448 reviews
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Honesty, pricing, process and quality scores appear once 5 customers have rated them.
Send mass personalized emails in bulk directly from Google Sheets and Gmail. Get an open rate up to 20x higher than with traditional emailing solutions. With a 4.8/5 rating on over 19,000 reviews and 10,000,000 installs in the Google Workspace Marketplace, YAMM is a top-rated app trusted by 150,000 organizations.
Yet Another Mail Merge (YAMM) (yamm.com) has 448 customer reviews on The Fair Hearing, with an average rating of 4.9 out of 5.
448 approved reviews, newest moderated first
Super easy product to use. It does exactly what it says. The customer support is incredible.
By Regan K.
Cordiality and attention to the customer. I was very well treated by Carlos, Thristan Luna, and Dimitris. I am immensely grateful for all the explanations and details provided by each member of the team I mentioned.
By Ferramentas A.
The app measures quota in an unpredictable way, leading to portions of bulk messages, not being sent out, and it’s touted ability to pick up where it left off and resend them on the next quota period doesn’t actually work. Support is a bit of a joke, or you get a name and a picture of someone who looks unique, but then you get a boiler plate response that is just copy and paste it from their health page, which is rarely that helpful.
By Scott Jonathan B.
YAMM has been my go-to platform for email sales outreach, and the level of support has consistently been excellent. I really value the reliability of the tool and the responsiveness of the team---it’s made a meaningful difference in my workflow.
By Henry B.
Super service et super service client
By Eliette V.
We had a company email domain switch right before I needed to pitch media, so my paid account wasn't accessible. I emailed for help, and everything was fixed within 20 minutes. Thank you to Dimitris, Carlos, and the rest of the customer service team for helping me out so quickly!
By Kerry Q.
Ótimo atendimento e eficiência.
By Adriano S.
Wonderful. Must to try this stuff if you need automation mail
By Xuân Quỳnh N.