Encode URLs for Email Links

Create click-safe links for email campaigns — encode special characters so links survive every email client.

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Email tips

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Email clients often break long URLs or misinterpret special characters. Encoding ensures every character is safe to include in an href.

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UTM tracking parameters (utm_source, utm_medium, utm_campaign) must be encoded if they contain spaces or special characters.

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Encode the full URL including the query string, then wrap it in your HTML anchor tag. Test the link before sending.

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Some email builders encode URLs automatically. Check by hovering over links in preview — if you see %20 for spaces, they're already encoded.

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Encode callback URLs that are passed as parameters