Freedom251 › Transactional SMS Software
Mitto
by Mitto
What Mitto is
Mitto provides business messaging tools and APIs for SMS, WhatsApp, Viber, and other channels. Its SMS API handles single or bulk messages, long messages, multiple character encodings, delivery callbacks, and message metadata. Two-way SMS supports sending and receiving messages, while inbound webhooks provide event delivery. SDKs are available for Node.js and C#. The 2FA API can send one-time passwords by SMS or text-to-speech. Campaign Manager supports creating and managing SMS campaigns and viewing delivery and usage reports. Mitto says it connects with HubSpot, Salesforce, and Shopify; HubSpot onboarding requires a Professional or Enterprise account plus a Mitto API key. SMS API requests require an API key, and client request IPs must be allowlisted. Access is for Mitto clients who sign up and receive API and network configuration. The Pay-as-you-go plan has no listed price, and SMS users can try a free trial. Mitto is web-based and headquartered in Zug, Switzerland.
Who it suits
Mitto suits businesses integrating SMS or other messaging channels through APIs, campaigns, webhooks, or 2FA. It is relevant to teams using Node.js or C#, and to organizations meeting the stated HubSpot and API access requirements.
What it does well
- Supports two-way SMS
- Inbound webhooks for event data
- Node.js and C# SDKs
- Campaign reporting tools
- Free SMS trial available
What to know first
- No free plan
- API access requires signup and configuration
- HubSpot needs Professional or Enterprise
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Pay-as-you-go | Pay-as-you-go per message; contact Mitto for bulk volume discounts. · SMS messaging · Bulk volume discounts available | On request |
As mitto.ch lists them, read 8 Oct 2026. The maker's own page has the final word.
Verdict
Mitto combines messaging APIs, campaign management, webhooks, and SMS-based 2FA under a pay-as-you-go model. The free trial helps evaluation, but API keys, IP allowlisting, and client onboarding are required for SMS API access.
Facts from Mitto's own pages
- 2FA
- The 2FA API sends one-time passwords by SMS or text-to-speech. · docs.mitto.ch, 8 Oct 2026
- Availability
- Mitto’s SMS API is available to Mitto clients, who must sign up and receive an API key and configuration for their IP addresses and callback URL. · docs.mitto.ch, 8 Oct 2026
- Campaign Manager
- Mitto’s Campaign Manager lets users create and manage SMS campaigns and view delivery and usage reporting. · docs.mitto.ch, 8 Oct 2026
- Free plan
- No · docs.mitto.ch, 22 Sept 2026
- Headquarters
- Zug, Switzerland · mitto.ch, 28 Sept 2026
- HubSpot requirements
- The HubSpot onboarding guide says users need a HubSpot Professional or Enterprise account and a Mitto API key. · info.mitto.ch, 8 Oct 2026
- Inbound webhooks
- Yes · docs.mitto.ch, 22 Sept 2026
- Integrations
- Mitto says it connects with platforms including HubSpot, Salesforce, and Shopify. · info.mitto.ch, 8 Oct 2026
- Privacy
- Mitto identifies Mitto AG as the data controller and states that it complies with GDPR and applicable data protection laws. · docs.mitto.ch, 8 Oct 2026
- Product
- Mitto provides business messaging tools and APIs for SMS, WhatsApp, Viber, and other channels. · info.mitto.ch, 8 Oct 2026
- SDK languages
- Node.js,C# · docs.mitto.ch, 22 Sept 2026
- Security
- Mitto’s SMS API requires an API key on every request, and Mitto says client request IPs must be allowlisted. · docs.mitto.ch, 8 Oct 2026
- SMS API
- The SMS API supports single and bulk messages, long messages, multiple character encodings, delivery callbacks, and message metadata. · docs.mitto.ch, 8 Oct 2026
- Support
- Mitto describes partner onboarding, technical training, and ongoing support from its team. · info.mitto.ch, 8 Oct 2026
- Trial
- Mitto’s Campaigns page says SMS users can try the service with a free trial. · info.mitto.ch, 8 Oct 2026
- Two-way SMS
- Two-way SMS requires a dedicated number from Mitto and a webhook endpoint supplied to the account manager. · docs.mitto.ch, 8 Oct 2026
Where Mitto stands on Freedom251
- Transactional SMS Software#34 of 76
- Communication Platform as a Service (cPaaS) Platforms#13 of 26
- SMS Marketing Software#26 of 50
- SMS APIs#19 of 34
- SMS API services#22 of 35