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Custom code email typo detection (common domain misspellings)

One of 565 written HubSpot workflow specs, by a collective of independent HubSpot consultants.

Professional

Seat pricing: Professional edition. To build it, a GTM Seat or an Ops Seat (an Ops Seat cannot create marketing emails or sequences). Per-hub plans: Data Hub Professional.

Contact6 stepsUpdated for HubSpot seat pricing
OutcomeContacts with a likely misspelled email domain, such as "gmial.com" or "yahooo.com", get flagged with a suggested correction, instead of bouncing silently on the first send and never being noticed until a campaign report shows a dead address.
Workflow mapdata-quality-028
Email known or changed leads to Custom code: check domain against misspelling table. Custom code: check domain against misspelling table leads to Domain matches a known typo?. Domain matches a known typo? leads to yes: Flag Possible typo, set suggested correction, create task; no: Status: Looks fine. yes no Email known or changed Custom code: check domain against misspelling table Domain matches a known typo? Flag Possible typo, set suggested correction, create task Status: Looks fine
Email known or changed leads to Custom code: check domain against misspelling table. Custom code: check domain against misspelling table leads to Domain matches a known typo?. Domain matches a known typo? leads to yes: Flag Possible typo, set suggested correction, create task; no: Status: Looks fine. yes no Email known or changed Custom code: check domain against misspelling table Domain matches a known typo? Flag Possible typo, set suggested correction, create task Status: Looks fine

When to use it, when not to

Use it

  • Use it right after contact creation or an email edit, catching typos before the first nurture email or sales outreach goes out and bounces.
  • Use it as a flag-and-suggest tool, not an auto-correct. Changing someone's actual email address without confirmation risks sending to the wrong person entirely if the "typo" was actually correct and unusual.
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Skip it

  • Do not use it expecting full email validation, syntax, mailbox existence, or disposable-address detection. This fiche only checks the domain against a fixed list of common near-miss misspellings of major providers.
  • Do not use it on a portal where most contacts use varied, unpredictable business domains; the fixed-typo-list approach only pays off for the handful of very common consumer domains people mistype often.
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The rest of this spec

Prerequisites · 3 items

Every property with its label, internal name, type and options, plus the assets the workflow needs.

Enrollment · 4 parts

The trigger, the criteria as ticked in the UI, the re-enrollment rule and the suppression list.

Steps · 6 numbered actions

Each action in order with its parameters, branches and delays.

Known pitfalls · 4

Traps seen in production, each with what breaks and what to do instead.

Test plan and UAT script · 4 cases, 3 variants

How to prove it works in a test portal, one case per branch, and a sign-off sheet.

Files · PDF, Markdown, JSON, CSV, code

The properties JSON creates the fields in one call. The workflow JSON documents the build. The custom coded action ships as a ready-to-paste .js file.

Install · 1 click, switched off

The installer creates the properties and the workflow, switched off, then opens a task for what it cannot create. Nothing is deleted, enabled or enrolled.

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