Fla. Stat. § 48.102
If, after due diligence, a party seeking to effectuate service is unable to effectuate personal service of process on a domestic or foreign corporation; a domestic or foreign general partnership, including a limited liability partnership; a domestic or foreign limited partnership, including a limited liability limited partnership; or a domestic or foreign limited liability company, the court, upon motion and a showing of such inability, may authorize service in any other manner that the party seeking to effectuate service shows will be reasonably effective to give the entity on which service is sought to be effectuated actual notice of the suit. Such other manners of service may include service electronically by e-mail or other technology by any person authorized to serve process in accordance with this chapter, or by an attorney. The court may authorize other methods of service consistent with the principles of due process. In suits involving a breach of contract, the court may consider authorizing the parties to effectuate service in the manner provided for in the contractual notice provision of the subject contract.
Fla. Stat. § 48.102