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Head-to-head · SMS Gateway Software

Sinch Engage vs Smstools

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Sinch Engage #2 in SMS Gateway Software 9.1/10 14-day trial Free trial✓ 0 of 5 features Visit Sinch Engage
Smstools #7 in SMS Gateway Software 8.3/10 Free plan Free plan✓ 5 of 5 features Visit Smstools

Sinch Engage leads on 0 checks, Smstools on 1, and 5 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreSinch Engage · 9.1/10
  • Free planonly Smstools
  • Free trialonly Sinch Engage
  • Most featuresSmstools · 5 of 5

Sinch Engage scores higher on our rubric for sms gateway software: 9.1 against 8.3 out of 10; our editors rank them #2 and #7.

Smstools offers free plan; Sinch Engage doesn't.

Sinch Engage is the better fit for marketing teams using multichannel campaigns. Smstools is the better fit for developers wanting a freemium API platform.

  • Sinch Engage fits best

    Marketing teams using multichannel campaigns

  • Smstools fits best

    Developers wanting a freemium API platform

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Sinch Engage 9.1/10 Visit ↗ Smstools 8.3/10 Visit ↗
At a glance
Editor score 9.1 8.3
Ranking #2 in SMS Gateway Software #7 in SMS Gateway Software
Best for Marketing teams using multichannel campaigns Developers wanting a freemium API platform
Pricing model Paid Free plan + paid
Starting price — $0.03/unit usage-based
Free plan — ✓ (best)
Free trial 14 days —
Deployment Cloud, Mobile Cloud
Platforms Web, iOS, Android Web
Support Live chat, Email, Phone, Tickets · 24/7 Email, Phone, Docs · 24/7
Compliance GDPR, ISO 27001, SSO/SAML GDPR
Integrations 15 integrations 50+ integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Sinch Engage 0/5 · Smstools 5/5
Two-way messaging Not checked yet ✓ (best)
Delivery reports Not checked yet ✓ (best)
Inbound SMS Not checked yet ✓ (best)
Contact management Not checked yet ✓ (best)
API access Not checked yet ✓ (best)
Specs
Included user seats Not checked yet Not checked yet
Our review
Pros
  • Supports SMS, MMS, RCS and WhatsApp campaigns
  • Combines automation, segmentation, analytics and two-way inboxes
  • Connects with CRM, commerce, ERP and workflow platforms
  • Free plan with REST API access and five official SDKs
  • Two-way SMS, inbound webhooks and real-time delivery reports
  • Integrations include Zapier, Salesforce, HubSpot and Shopify
Cons
  • Starts at $99 per month with no free plan
  • Entry plan includes 3,000 SMS and supports 1 user
  • Less focused on core gateway depth than broader engagement workflows
  • Pricing varies by destination country and message volume
  • U.S. message pricing is usage-based rather than subscription-based
  • The platform is proprietary rather than open source
Our verdict

Sinch Engage is a business messaging platform for organizations that create, schedule, automate and track customer communications. It supports SMS, MMS, RCS and WhatsApp campaigns through a browser-based portal, iOS and Android apps,…

Read the review →

Smstools is a cloud-based business messaging platform for sending and receiving SMS through web software or REST APIs. It is aimed at developers, businesses and IT teams that need transactional notifications, marketing campaigns, bulk…

Read the review →
  1. Sinch EngageSMS Gateway Software 9.114-day trial
  2. SmstoolsSMS Gateway Software 8.3Free plan

Strengths and trade-offs

  • Sinch Engage — where it wins

    • Supports SMS, MMS, RCS and WhatsApp campaigns
    • Combines automation, segmentation, analytics and two-way inboxes
    • Connects with CRM, commerce, ERP and workflow platforms

    Where it doesn't

    • Starts at $99 per month with no free plan
    • Entry plan includes 3,000 SMS and supports 1 user
    • Less focused on core gateway depth than broader engagement workflows

  • Smstools — where it wins

    • Free plan with REST API access and five official SDKs
    • Two-way SMS, inbound webhooks and real-time delivery reports
    • Integrations include Zapier, Salesforce, HubSpot and Shopify

    Where it doesn't

    • Pricing varies by destination country and message volume
    • U.S. message pricing is usage-based rather than subscription-based
    • The platform is proprietary rather than open source

More comparisons

All SMS gateway software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update