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    Overview
    ProductRatingMost Used ByProduct SummaryStarting Price

    Google Voice

    Score8 out of 10
    N/AGoogle Voice is a free IP telephony service that provides users with one phone number that can be forwarded to multiple phones or devices. It includes features such as call forwarding, voicemail translation, text messaging, and voice calls. Fees may apply for international calling.

    $10

    per month

    Sinch Mailgun

    Score9.3 out of 10
    N/AMailgun is a transactional email API service which was owned and supported by Rackspace (acquired in 2012) and then spun off in 2017 as an independent and standalone entity. It is now supported by Sinch since that company's acquisition of Mailgun and Mailjet, through acquiring Pathwire.

    $15

    per month

    Pricing
    Google VoiceSinch Mailgun
    Editions & Modules
    Starter
    $10
    per user/per month
    Standard
    $20
    per user/per month
    Premier
    $30
    per user/per month
    Basic
    $15
    10,000 emails/mo included
    Foundation
    $35
    50,000 emails/mo included
    Scale
    $90
    100,000 emails/mo included
    Free
    Free
    100 emails/day included
    Offerings
    Pricing Offerings
    Google VoiceSinch Mailgun
    Free Trial
    NoYes
    Free/Freemium Version
    NoYes
    Premium Consulting/Integration Services
    NoNo
    Entry-level Setup FeeNo setup feeNo setup fee
    Additional Details——
    More Pricing Information
    Community Pulse
    Google VoiceSinch Mailgun
    Considered Both Products
    Google
    No answer on this topic
    Sinch
    No answer on this topic
    Key User Insights
    Would buy again
    95%
    Would buy again
    41 Answers
    77%
    Would buy again
    10 Answers
    Delivers good value for the price
    98%
    Delivers good value for the price
    41 Answers
    77%
    Delivers good value for the price
    10 Answers
    Happy with the feature set
    91%
    Happy with the feature set
    39 Answers
    85%
    Happy with the feature set
    11 Answers
    Lived up to sales and marketing promises
    93%
    Lived up to sales and marketing promises
    27 Answers
    82%
    Lived up to sales and marketing promises
    9 Answers
    Implementation went as expected
    97%
    Implementation went as expected
    35 Answers
    83%
    Implementation went as expected
    10 Answers
    Features
    Google VoiceSinch Mailgun
    Cloud PBX
    Comparison of Cloud PBX features of Google Voice and Sinch Mailgun
    Feature
    Google Voice
    5.3
    53 Ratings
    40% below category average
    Sinch Mailgun
    -
    Ratings
    Hosted PBX6.025 Ratings00 Ratings
    Multi-level Interactive Voice Response (IVR)3.027 Ratings00 Ratings
    User templates1.419 Ratings00 Ratings
    Call reports7.046 Ratings00 Ratings
    Directory of employee names9.027 Ratings00 Ratings
    Call Management
    Comparison of Call Management features of Google Voice and Sinch Mailgun
    Feature
    Google Voice
    8.4
    67 Ratings
    2% above category average
    Sinch Mailgun
    -
    Ratings
    Answering rules8.546 Ratings00 Ratings
    Call recording8.152 Ratings00 Ratings
    Call park6.422 Ratings00 Ratings
    Call screening10.060 Ratings00 Ratings
    Message alerts9.065 Ratings00 Ratings
    VoIP system collaboration
    Comparison of VoIP system collaboration features of Google Voice and Sinch Mailgun
    Feature
    Google Voice
    7.5
    44 Ratings
    6% below category average
    Sinch Mailgun
    -
    Ratings
    Video conferencing6.022 Ratings00 Ratings
    Audio conferencing8.039 Ratings00 Ratings
    Video screen sharing8.014 Ratings00 Ratings
    Instant messaging8.027 Ratings00 Ratings
    Mobile apps
    Comparison of Mobile apps features of Google Voice and Sinch Mailgun
    Feature
    Google Voice
    7.2
    63 Ratings
    9% below category average
    Sinch Mailgun
    -
    Ratings
    Mobile app for iOS6.945 Ratings00 Ratings
    Mobile app for Android7.451 Ratings00 Ratings
    Best Alternatives
    Google VoiceSinch Mailgun
    Small Businesses
    CallFire
    Score9.7 out of 10
    Postmark
    Score7.7 out of 10
    Medium-sized Companies
    Fuze
    Score8.2 out of 10
    Postmark
    Score7.7 out of 10
    Enterprises
    Cisco Unified Communications Manager (Call Manager)
    Score8.3 out of 10
    No answers on this topic
    All AlternativesView all alternativesView all alternatives
    User Ratings
    Google VoiceSinch Mailgun
    Likelihood to Recommend
    7.5
    (73 ratings)
    9.5
    (29 ratings)
    Likelihood to Renew
    9.3
    (7 ratings)
    -
    (0 ratings)
    Usability
    8.0
    (11 ratings)
    10.0
    (3 ratings)
    Availability
    -
    (0 ratings)
    10.0
    (1 ratings)
    Performance
    -
    (0 ratings)
    9.0
    (1 ratings)
    Support Rating
    7.0
    (35 ratings)
    7.4
    (7 ratings)
    Implementation Rating
    10.0
    (2 ratings)
    -
    (0 ratings)
    Contract Terms and Pricing Model
    7.0
    (1 ratings)
    -
    (0 ratings)
    Product Scalability
    -
    (0 ratings)
    10.0
    (1 ratings)
    Professional Services
    7.0
    (1 ratings)
    -
    (0 ratings)
    User Testimonials
    Google VoiceSinch Mailgun
    Likelihood to Recommend
    Google
    I do think Google Voice works well for organizations that do not have a support team meant to provide regular telephone support, and instead do so on an ad hoc basis. I would not recommend it for high-volume call activities, such as SDR motions.
    Incentivized
    Read full review
    Sinch
    Mailgun's pay-as-you-go pricing structure is fantastic, especially if you don't need to send that much email. The pricing, including the free tier, is much more generous than what you can get with some pricier providers, like SendGrid. I mainly just use Mailgun as an SMTP server for web services, and the service has been set-up-and-forget, which is great because I never even have to log onto the Mailgun website and do any work. Mailing list support also looks great for rolling-your-own and not relying on more expensive mailing list services.
    Incentivized
    Read full review
    Pros
    Google
    • Google Voice has been great for setting up additional phone lines and numbers.
    • The voicemail inbox is a great feature and you can see when messages come in online and listen to the messages from your computer.
    • Google Voice allows us to have multiple phone numbers and lines for specific business purposes.
    Incentivized
    Read full review
    Sinch
    • Its SMTP is very easy to use and it integrates easy with all CMS and frameworks.
    • It allows you to have a record of the incoming/outgoing emails and get useful statistics about them.
    • Thanks to their 5000 free emails per month, it is a very good option to startups and small companies.
    Incentivized
    Read full review
    Cons
    Google
    • There has not been much innovation since the initial release.
    • It doesn't handle SMS well.
    • It does not natively integrate with CRM without legacy complication
    • It is not supported by Google as it once was
    • Call Recording is non-existent
    • Call-Tree or Virtual Auto-Attendant needs are not available
    Incentivized
    Read full review
    Sinch
    • No built-in templating features (This was a bit sad after coming from Mandrill which excelled at this)
    • Dashboard UI (although easy to use) is a bit dated in appearance
    • Logs are cumbersome compared to Mandrill
    • Setting up TLD (top level domain) names (things like .online or .church) that are not common require an email to tech support (this is annoying)
    • Sometimes can be slow in delivery
    • Shared IP addresses can be SPAM filtered or delayed (requires an email to support to have a new one assigned - Note: this can be mitigated by buying a dedicated one for a monthly fee)
    Incentivized
    Read full review
    Likelihood to Renew
    Google
    Google Voice has been invaluable for us in our effort to provide exceptional customer service. With Google Voice, we have been able to increase our customer interactions while reducing the wait time to reach a live person on our team. We couldn't be more pleased with the way things have worked out since implementing Google Voice.
    Incentivized
    Read full review
    Sinch
    No answers on this topic
    Usability
    Google
    I think it works really well in the arena it operates in, but not so well in areas where an enterprise system would be more appropriate. It's great for quick solutions that just work, but not so much for more complex call management tasks.
    Incentivized
    Read full review
    Sinch
    The time for the initial setup is very quick, since you can start sending (thus developing) from their sandbox in no time. The actual configuration involves, as usual, some DNS changes that may require time but are well explained and documented. Once everything is set up, there are a lot of monitoring tools that you can use to optimize your lists.
    Incentivized
    Read full review
    Reliability and Availability
    Google
    No answers on this topic
    Sinch
    There have been a few minor outages through the years, but nothing more than a few minutes. These small outages are to be expected in any kind of a SaaS product, but Mailgun handles them very well. We designed our software to just retry sending after a while if there is an outage. As far as I know, we have never had to do more than a few retry cycles. This is all automated on our end, so we rarely even notice. Our customers have never noticed any mail sending outages.
    Incentivized
    Read full review
    Performance
    Google
    No answers on this topic
    Sinch
    The API and the deliverability of emails is excellent. Their API is very responsive and performs perfectly fine. I have no complaints there. Their management interface though (accessed through the web) is pretty slow though. Searching through lists of emails when I'm tracking down a problem for a customer can take 10+ seconds which is annoyingly high for a modern web app.
    Incentivized
    Read full review
    Support Rating
    Google
    They do not offer support unless you have the Business account for Google Voice under G Suite. This is tough, because Google doesn't really have a customer support team for this service, so when it gets shut down for a few hours, we have no choice but to wait it out. But this doesn't happen that often, which is great.
    Incentivized
    Read full review
    Sinch
    You can't seem to get ANY support until you shell out hundreds of dollars per month. I even did this when we could not deliver mail with Mailgun, and the response was slow and inadequate. Nor would they refund my money. I'll never be a customer of Mailgun again.
    Incentivized
    Read full review
    Implementation Rating
    Google
    It is a pretty seamless program to transfer to, even for people who either have little experience with these programs or people who were stuck on Skype
    Incentivized
    Read full review
    Sinch
    No answers on this topic
    Alternatives Considered
    Google
    The integrations of Google Voice with all our devices are flawless, Android, iOS, Windows, Linux and Mac. Also, the call performance is far superior on wifi as well as on mobile data. With Skype, we had several problems with personal accounts, performance issues, and in general, it felt awkward to use it.
    Incentivized
    Read full review
    Sinch
    To be honest, the tools are quite similar and again I dont recommend using them as a standalone products, but they power the work we do via CRMs and our marketing campaigns. Mailgun integrates slightly better which it is why it is the preferred choice for our agency, as it integrations options seem to be better
    Incentivized
    Read full review
    Contract Terms and Pricing Model
    Google
    Google Voice should be also be use to those who have difficulty in speaking English. So the contract term will need to be a little strict as Google Voice is used in navigations as the part of GPRS navigation is personal. The private data need to be in control much more securely and safely.
    Read full review
    Sinch
    No answers on this topic
    Scalability
    Google
    No answers on this topic
    Sinch
    Over the past six years, Mailgun has scaled with our growth very easily. We haven't had to make any code changes to handle our larger volume today, and their pricing has scaled naturally with our growth. As far as I know, there is nothing we will need to do in order to grow 10-fold. Mailgun just handles the load really well.
    Incentivized
    Read full review
    Professional Services
    Google
    It help to connect with the products that we use as a part. We need to get in touch with our professional world. It is like a tool that helps us to get in touch with everything from A to Z in our professional careers. So we need to be in touch with everything as linearly as the jpb can be done.
    Read full review
    Sinch
    No answers on this topic
    Return on Investment
    Google
    • Cost for Google Voice is stellar, starting at $10/mo per user.
    • While it doesn't offer a new Audio/Video conferencing solution it does integrate with GSuite so it makes use of Google Calendar and Hangouts/ Google Meet.
    • Gets the employee's to use their company phone numbers more as texting is easy and deployment is simple.
    • The cell phone app is reliable and easy to deploy.
    Incentivized
    Read full review
    Sinch
    • By not investing in our mail server, we have saved huge amount of money and time. For configuration and installation of an email server on Linux-based server, we would have to hire a network administrator.
    • If email delivery is an issue in a hosting provider, another solution is to switch the hosting. Fortunately with Mailgun, we didn't need to try different hosts and experiment which one works best for emails. We can stick to our existing web hosting provider and would not need to change it just for the sake of improving email deliverability.
    • The pricing of Mailgun is very cheap and straightforward. First 10K emails are free every month and that's a big advantage for our organization because our volume of emails is rarely more than 10K per month.
    Incentivized
    Read full review
    ScreenShots