Update adopters.md

docs/en/introduction/adopters.md

@@ -60,6 +60,7 @@ toc_title: Adopters
 | <a href="https://lifestreet.com/" class="favicon">LifeStreet</a>                               | Ad network                      | Main product          | 75 servers (3 replicas)                                    | 5.27 PiB                                                                     | [Blog post in Russian, February 2017](https://habr.com/en/post/322620/)                                                                                                                                                 |
 | <a href="https://mcs.mail.ru/" class="favicon">Mail.ru Cloud Solutions</a>                     | Cloud services                  | Main product          | —                                                          | —                                                                            | [Article in Russian](https://mcs.mail.ru/help/db-create/clickhouse#)                                                                                                                                                    |
 | <a href="https://tech.mymarilyn.ru" class="favicon">Marilyn</a>                                | Advertising                     | Statistics            | —                                                          | —                                                                            | [Talk in Russian, June 2017](https://www.youtube.com/watch?v=iXlIgx2khwc)                                                                                                                                               |
+| <a href="https://mellodesign.ru/" class="favicon">Mello</a>                                | Marketing                     | Analytics            | 1 server                                                          | —                                                                            | [Article, Oct 2020](https://vc.ru/marketing/166180-razrabotka-tipovogo-otcheta-skvoznoy-analitiki)                                                                                                                                               |
 | <a href="https://www.messagebird.com" class="favicon">MessageBird</a>                          | Telecommunications              | Statistics            | —                                                          | —                                                                            | [Slides in English, November 2018](https://github.com/ClickHouse/clickhouse-presentations/blob/master/meetup20/messagebird.pdf)                                                                                         |
 | <a href="https://www.mindsdb.com/" class="favicon">MindsDB</a>                          | Machine Learning              | Main Product            | —                                                          | —                                                                            | [Official Website](https://www.mindsdb.com/blog/machine-learning-models-as-tables-in-ch) |
 | <a href="https://www.mgid.com/" class="favicon">MGID</a>                                       | Ad network                      | Web-analytics         | —                                                          | —                                                                            | [Blog post in Russian, April 2020](http://gs-studio.com/news-about-it/32777----clickhouse---c)                                                                                                                          |