Provider,Coverage,Per user,Per SMS,SMS: Per 10K/mo,Message rate limit,API rate limit,Reference,Description,Virtual Numbers,Monthly Cost,Reliability Score
Mailosaur,SMS+email,From 5*$16/mo,$0.04/msg,$500.00,Any,Any,[Mailosaur Docs](https://mailosaur.com/docs/),Designed for developers/testers to receive SMS & email for automation testing. Great API & integrations.,5 to unlimited,$80.00,9/10
Google Voice,SMS+email,$10/mo,Included,$10.00,*,1500/user/minute,[Google API Limits](https://developers.google.com/workspace/gmail/api/reference/quota),"Google's personal number, not suited for automation or multiple number scaling. OK for light testing.",1 per user,$10.00,6/10
Twillio+Sendgrid,SMS+email,,,$83.00,Any,Any,"[Twilio Docs](https://www.twilio.com/docs), [SendGrid Docs](https://docs.sendgrid.com/)",Twilio (SMS) and SendGrid (email) are scalable and battle-tested platforms. Ideal for large test flows.,1000s,$83.00,10/10
Mailslurp,SMS+email,,,$550.00,Any,Any,[Mailslurp Docs](https://www.mailslurp.com/docs/),API-based inbox & SMS number generation for secure test automation. Focused on integration-heavy use.,1000,$550.00,8/10
Zoom Phone,SMS,$15/mo,Included,$15.00,*,,[Zoom SMS Docs](https://support.zoom.us/hc/en-us/articles/360060660271-SMS-with-Zoom-Phone),Part of Zoom ecosystem. Basic SMS support for US numbers only. Not designed for high scale.,1 per user,$15.00,5/10
Line2,SMS,$8/mo,Included,$8.00,*,,[Line2](https://www.line2.com/features/sms/),Simple second-line app with SMS support. Not built for automation workflows.,1 per user,$8.00,5/10
RingCentral,SMS,$30/mo,Included,$30.00,*,,[RingCentral SMS](https://support.ringcentral.com/article/SMS-MMS-RingCentral-App.html),Business-grade VoIP + SMS service. Not API-centric. Best for light internal testing.,1 per user,$30.00,6/10
Twilio,SMS+MMS,$1/num/mo,$0.0079/msg,$79.00,Unlimited,50 requests/sec,"[Twilio Pricing](https://www.twilio.com/sms/pricing), [Twilio Rate Limits](https://support.twilio.com/hc/en-us/articles/223134307)","Top-tier SMS API provider. Ideal for massive automation, CI/CD workflows, and test validations.",Thousands,$79.00,10/10
Telnyx,SMS,$1/num/mo,$0.0075/msg,$75.00,Unlimited,10 requests/sec,[Telnyx Docs](https://developers.telnyx.com/docs/v2/messaging/overview),Telco-grade provider with lower cost than Twilio. Fully programmable and scalable.,Thousands,$75.00,9/10
Plivo,SMS,$0.80/num/mo,$0.0065/msg,$65.00,20 msg/sec,10 requests/sec,[Plivo Pricing](https://www.plivo.com/sms/pricing/),Cost-efficient SMS API provider with all the needed features for automation and testing.,Thousands,$65.00,8/10
SMS-Activate.ru,SMS,Pay per use,~₹1/msg,₹10K,*,Depends on usage,[SMS-Activate Docs](https://sms-activate.org/en/info/API),Disposable number rental service. Used heavily for OTP testing. Shared or private pool.,"10,000",$100–$300,7/10
5SIM.net,SMS,Pay per use,~₹1/msg,₹10K,*,Depends on usage,[5SIM Docs](https://5sim.net/docs),"Provides temporary numbers for automation, especially for testing signup/login flows.","10,000",$100–$300,7/10
OnlineSIM.io,SMS,Hourly/Daily Rental,~$0.01/msg,$100.00,*,Depends on usage,[OnlineSIM API](https://onlinesim.io/docs/api/en/),Flexible SMS number rental with API. Great for OTP handling at scale.,"10,000",$100–$200,7/10
Textverified,SMS,$1.5/num/day,Incl.,$1500.00,*,Depends on plan,[Textverified Docs](https://textverified.com/docs/api),Real-device based numbers. Reliable for US-based testing. Ideal for anti-spam compliant apps.,500–1000,$1500.00,8/10