Archive

„Concise, precise, and unobtrusive: a shining example.“ Subscriber Petra Popall
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„Thank you for your always very interesting newsletter“ Subscriber D.E.

„Oh your newsletter does so much good!“
Subscriber S.R.

„Great newsletter, I pulled out a note and pencil!“
Subscriber F.R.

„Thank you for a year of inspiration and helpful thoughts.“
Subscriber E. M.

„I always enjoy reading your informative newsletter“
Subscriber J. K.

„You write the best newsletters“
Subscriber Chr. A.

„Thank you for your beautiful newsletters, which do not come too often, moreover, with good content and always have a suggestion ready“
Subscriber P. P.

„I always enjoy your great newsletter!“ subscriber S. W.

„Thank you for the great newsletter tips.“ Subscriber R. H., Marketing Manager

„You are the only one who manages to maintain interest in the newsletter“ Subscriber S. R.

„Successful“ Subscriber B. T.

„Helpful, concise, accurate – saves time“ Subscriber A. F.

„I always benefit from your newsletter“ Subscriber S. A.

„Very descriptive“ Subscriber G. K.

„Always a pleasure to read“ Subscriber S. P.

 „Finally someone who doesn’t babble, but speaks plainly“ Prof. Niels Brabandt

„Your tips are so helpful that there is now an „Umbach“ folder in my filing system.“  K. M., Marketing Manager

 „Inspiring, uplifting from the daily grind“.
Dr. Franz von Götz, Head of Product Management Urology, medac