How to sign an email in Colombia

Question

In Argentina, one simply signs off with "un abrazo" or "un abrazo fuerte," or maybe even "besos" or something like that as well; it's been a few years since I've worked there so I don't remember. However, in Colombia I work mostly with Americans or Colombians who only work with Americans, so I don't know how to sign off to Colombians who aren't used to communicating with Americans.
Google does not seem to understand this question. Any ideas?

Answer 1

You could use 'sinceramente' which means sincerely. I'm assuming that you probably do not use usted with them because they are your coworkers, so 'sinceramente' may not be the best choice. If worse comes to worst though, use it.