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SMS Marketing · Buyer guide

SMS API & CRM integrations

This guide explains how to connect SMS messaging to your business systems using our API, webhooks and CRM integrations, and what to settle before you go live.

4 min readBy Acquira LabsUpdated October 2026

Key takeaways

  • Use the API when messaging must work inside an existing app or lead workflow.
  • Webhooks trigger follow-up from messaging events automatically.
  • Native connections include Salesforce, HubSpot and GoHighLevel.
  • Decide which system is the source of truth for each workflow.

When an SMS API is useful

An API helps when messaging needs to work with an existing application, lead workflow or customer operation, for example sending a text the moment a lead arrives in your CRM. Our platform supports programmatic SMS workflows. Test every implementation against your own systems and requirements.

Use webhooks for event-driven workflows

Webhooks send messaging events, such as inbound replies, opt-outs or delivery updates, to your other systems so follow-up happens without manual work. Before integrating, confirm which events are available, what data is included and how errors are handled, and decide which system is the source of truth.

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Connect messaging with your CRM

CRM connections keep SMS in sync with lead assignment, contact records, segmentation and follow-up. Native integrations include Salesforce, HubSpot and GoHighLevel, and other CRMs can connect through the API and webhooks. Confirm how contact records, messaging activity and follow-up ownership will appear in your CRM.

Implementation questions to resolve first

TopicWhat to decide
SystemsWhich platforms are involved and who owns each
Data flowWhich fields move, in which direction and when
EventsWhich actions trigger messages or updates
AuthenticationHow credentials are issued, stored and rotated
Field mappingHow contact and custom fields line up
DuplicatesHow repeat contacts are matched
TestingTest cases and sign-off before production
MonitoringWho watches errors and how alerts work

Do not assume an integration covers a workflow until you have verified the behavior end to end.

Plan operations at message volume

Account for campaign scheduling, automated replies, segmentation, analytics and staff capacity for incoming conversations. The platform is built for high daily volumes. Align volume with campaign design, system behavior, monitoring and the team available to handle replies.

Frequently asked questions

Does the platform support API integration?

Yes, for connecting SMS workflows to your applications and systems.

Does it support webhooks?

Yes. Confirm the events, data, error handling and ownership for your workflow.

Which CRMs can it integrate with?

Salesforce, HubSpot and GoHighLevel natively, plus others through the API and webhooks.

What should I confirm before starting an integration?

Systems, data flows, events, authentication, field mapping, duplicates, testing, error visibility and ownership.

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