@altcode said in Syncable search engines – Vivaldi Browser snapshot 2621.3:
it is more than that, the mail client is one of the main reasons as to why Vivaldi was created to begin with. In fact, before the very first technical preview was released, the mail client had already been promised
Turns out work had begun on the mail client, and versions of it were being tested, before the very earliest Technical Preview of Vivaldi saw the light of day on Jan 27, 2015. So it was not only promised from the beginning - it was actually in process before day one.