The text on the stickers was as follows

[aminaas1576]

And we had a list of 90+ top developers in Russia. We found the address of each developer and added them to the stickers on the tubes.

We encountered some difficulties in the mailing:

1. It took us a while to find a contractor who could send the posters. Our usual courier service packs everything in its own bags. This would make the packages less attractive.
The agency we had contact with stopped responding after the second letter.
Another agency that I simply found on the Internet - and most of the websites, of course, are like from the early 2000s - only sends flat envelopes, but not large tubes.
At that time, Yandex.Delivery did not operate in intercity mode.
Eventually we found an agency from St. Petersburg that took on the task.

2. The posters had to be delivered to the marketing departments. We indicated this on the stickers as well. 99% of developers do not have separate departmental phone numbers, which is logical in iraq email list principle. And in general, it is usually difficult to find contacts - most often they write the numbers of the sales departments, and it is not clear what to do for people like us.
As a result, we did not provide phone numbers, only addresses. But perhaps not because numbers are difficult, but because we were inexperienced and did not think about it. Then the agency wrote my number in the packages, and for three more weeks couriers from St. Petersburg, Moscow, Kazan, Makhachkala called me to ask how to find the developer's office in a building unknown to me, or what to do if the security guard refuses to let the courier in.
I must say that the agency that sent out the posters did a great job - everything was sent promptly, they sent me tracking numbers for each parcel, so we could calculate the percentage of those delivered.
Now let's get to the numbers:

the client signs the documents at the time of writing this case (3 months after the mailing)