Verb conjugation of "colar" in Spanish

The picture I sent yesterday was taken on the first evening. And this morning the email bounced back. The user has already uploaded 3 different pictures of himself, all with the same facial expressions.
Sometimes I visit Vocabulix to meet new people. It is true that one could do the same on Facebook, but the FB page is rather for friends, and you are less likely to contact strangers for this purpose.
Do not worry, please, all is well here. I find it fascinating how fast you can write texts in foreign languages. I know how hard it is, and I congratulate you. Waiting to your next email.