# Integrations

> Handoffs between two tools, judged the way an owner would: where each one breaks, which system holds the truth, how duplicates are stopped, what stays human.

These pages look at one handoff between two tools at a time, the way an owner would judge it. Each one shows where the handoff breaks, which system holds the truth, how duplicates are stopped, and what stays with a person. They're written for deciding what to build, so they skip click-by-click setup.

I start with the handoffs that lose leads or make duplicate records, because those cost you before anyone notices. A lead that lands on two contacts gets two replies or none, and a lead that never lands gets nothing at all.

Each page ends with what I'd pick for your situation. Sometimes that's the tool's own settings, and sometimes it's a small system between the two tools that checks every record before it's written.

- [How do I stop website form duplicates in HubSpot?](https://signalnine.io/integrations/website-form-to-hubspot): Where the handoff from your website form to HubSpot makes duplicates or loses leads, which field is the key, what stays with a person, and what I'd pick.
- [How do I approve email replies from Slack before they go out?](https://signalnine.io/integrations/gmail-to-chat-approval-to-reply): Approving email replies from Slack, Telegram or Google Chat: what the built-in apps do, where an approval loop breaks, the send-once rule, and what I'd pick.

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## Related

- [Comparisons](https://signalnine.io/compare): Decision pages for owners: a criteria table, where each option falls short, and a pick for each situation.
- [Glossary](https://signalnine.io/glossary): Plain definitions of the words this site uses about leads, handoffs and the systems between your tools, written for owners of service businesses.

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Mashrur Rahman, Founder, SignalNine. Published 2026-10-04, updated 2026-10-04.
Canonical: https://signalnine.io/integrations