Docs: Custom Branding & Form Styling
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Letterbox lets you customise the text of your hosted contact forms.
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Available customisation options depend on your membership tier.
Tier availability
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Customisation features are unlocked with paid membership tiers.
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Standard tier unlocks a custom form title and description.
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Pro tier and above also unlocks custom success and error messages.
Custom form title
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Replace the default form heading with your own title.
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Maximum 255 characters.
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Available from the Standard tier.
Custom success & error messages
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Set a custom message shown to visitors after a successful submission.
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Set a custom message shown when a submission fails.
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Maximum 500 characters each.
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Available from the Pro tier.
How to configure
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In your profile, select the contact form you want to customise.
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Find the branding and customisation settings section.
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Enter your preferred values for the options available to your membership tier.
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Save the changes. Customisations take effect on your hosted form immediately.