med vänliga hälsningar

Etymology
Compare,.

Adverb

 * 1)  With friendly greetings.
 * 2) A conventional friendly formula for ending an e-mail or letter, best regards, kind regards
 * Meddela mig så fort som möjligt.
 * Med vänliga hälsningar,
 * Staffan
 * Let me know as soon as possible.
 * Best regards,
 * Staffan

Usage notes
Swedish mail correspondence tends to be pretty casual. An introductory "Hej!" and an ending "Med vänliga hälsningar" is usually professionally appropriate.