UserVoz Telecomunicações is a Brazilian business communications provider. Its website mainly highlights products such as VoIP resale, PABX Virtual, SIP Trunk, 0800 numbers, DID numbers, auto dialers, Call Center solutions, SMS Short Code, and Meta ChatBot API. Overall, it is positioned more toward local business telephony and customer-service communications than as a global email or SMS platform.
In terms of channels, UserVoz is centered on voice services, covering cloud PABX, SIP Trunk, 0800, fixed/mobile DID numbers, automated outbound calling, and call center solutions, while also offering SMS Short Code and Meta ChatBot API. Its PABX supports enterprise switchboard features such as extensions, URA/IVR, queues, and call forwarding. SIP Trunk can be connected to Asterisk, FreePBX, FreeSWITCH, Trixbox, ATA VoIP devices, and softphones, making integration relatively straightforward for teams already familiar with VoIP.
The site does not publicly disclose specific plan pricing, call rates, or SMS unit prices. The FAQ states that there is no contract term, payment is prepaid, boleto and PIX are supported, and users can request a free trial. However, both 5-day and 7-day trial periods appear in the text, so this should be confirmed with sales. On the performance side, the site does not disclose SLA, answer rate, SMS delivery rate, or API latency. What is known is that by default, the same number supports 5 concurrent calls, 0800 receiving channels are not limited, number porting usually takes 3–15 days, and 0800 porting takes around 10 days.
The main advantages are that its product lineup closely matches Brazilian business communications scenarios, its voice capabilities are fairly complete, there is no long-term contract, and testing is available, making it suitable for low-barrier trials. The drawbacks are limited pricing transparency, relatively little documentation and technical detail for SMS Short Code and ChatBot API, and a lack of information on international coverage, service levels, and compliance. Overseas customers should also note that the main payment methods are Brazil-local boleto and PIX.
UserVoz is better suited to clinics, offices, customer service teams, call centers operating in Brazil, as well as agents looking to resell VoIP. For Chinese teams that need to reach Brazil’s local telephone network, it can be considered as a local VoIP/PABX candidate, but contract terms, invoicing, payment, cross-border access, and technical support language should be confirmed in advance. The source text does not provide information about access from China, so it is recommended to test the official website, dashboard, and SIP registration connectivity directly. If the priority is global SMS or API communications, alternatives such as Twilio, Infobip, Zenvia, and Vonage may be compared; for mainland China use cases, Alibaba Cloud, Tencent Cloud, and Huawei Cloud communications products may also be considered.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on uservoz.com.br official site.
uservoz.com.br is an Brazil Comms & Email provider. TG4G tracks its product information, an overall rating of 5.0/10, and a China-accessibility score of Limited (proxy recommended). Click "Visit Official Site" to reach uservoz.com.br directly.