6 Best Free & Low-cost VoIP Services in 2026

Ooma Basic is a free VoIP phone service that includes essential features such as caller ID, 911 service, and voicemail. If you want more control and convenience, Premier adds call blocking, voicemail monitoring, and the ability to ring multiple devices at once.

The Essentials plan covers the basics, including a virtual receptionist, a mobile app, and up to 50 calling features. With Pro, you get added functionality, such as video meetings, call recording, and voicemail transcriptions, which are ideal if your team works across multiple devices. For more advanced needs, the Pro Plus includes customer relationship management (CRM) integrations, call analytics, and features like hot desking and call queuing.

• Custom call blocking: Block unwanted calls by number or caller ID, and choose whether to send them to voicemail or disconnect.
• Enhanced caller ID: Identifies unknown callers using a national database, displaying both the number and name
• Virtual fax: Send and receive faxes digitally through the Ooma app, no physical fax machine required. A single fax may contain multiple PDF files.

Customize spam call blocking with Ooma’s call filtering preferences. (Source: Ooma)