Saturday, November 7, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
448 reviews
Yet Another Mail Merge (YAMM)Select a line to read only those reviews.
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
I had a superb experience and 5 stars for their customer service. I didn't expect that someone will answer all my queries quickly. Carlos answered all my questions and can say that he is very helpful! Will continue to use YAMM! Keep it up!
By Charis Erika M.
I am satisfied for a quicq answer and good reactivity.
By Philippe C.
I've been using YAMM for more than 5 years in both personal and business accounts. Whenever I need support, YAMM is very responsive and supportive. The services are developed more and more detailedly.
By Ngọc Trâm Lê M.
Great experience! Thanks to Carlos and Omiros :)
By KA A.
Quick and easy, great job support team :)
By Kostadin M.
YAMM has simplified the way that we send emails. It allows us to create tailored messaging to our volunteers using our existing infrastructure in Google Sheets. It's easy to use and a great tool for our organization.
By Katie R.
Fast and efficient help!
By Brianna R.
I got a quick and very helpful reply. The expert from YAMM was also very friendly.
By Jelle
