Maravillosa!
Maravillosa!! Muy fácil de utilizar y eficaz
By Cynthia F.
Monday, November 9, 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.
Showing 424 reviews with 5 stars · Clear filters
Maravillosa!! Muy fácil de utilizar y eficaz
By Cynthia F.
Have been using YAMM for over 2 years now. Fantastic tool and awesome customer support.
By Abhishek R.
In the year I've been at my company, we've considered other services like 3 times but we always stay with YAMM because it's the best. 5/5 would recommend.
By Vicky At InGenius P.
Email support by YAMM was superb! A very prompt rely to my issue; professional, concise, and accurate assessment of the problem. Thank you, Lex, and YAMM for your valuable assistance!
By J C.
What a super app...while n business it provided ease of communicating with over 500 people as individualsUnfortunately closed the business but ould recommend YAMM for any Mass emailing., not BCC.
By Peter D.
YAMM support came back super fast (way faster than I could have hoped for!!!) and resolved the querie uncomplicated and fast! Love the product - it is super easy, much more affordable than its big named competitors! We will be Yamming for a long time!
By Sibylle S.
I needed a mail merge that would work with a list of email addresses stored on a Google drive using a government gmail accounts. YAMM was simple to install. When I reached out for help in getting started, I had a personalized and effective response almost immediately.
By S.B.
Love their commitment to customer service
By Sisi C.