Avoiding Unicode in Clay.com Emails to Prevent Spam Issues

Amir Dawoud · 2025-08-16 07:34:57.204422+00

Hey there - I am using to write personalized emails - but someone told me that everytime claygent creates an email there's something called "unicode" included that instantly makes you land in spam - and you must include in your prompt "avoid including unicode" or "delete all unicode" - is this true? I would love to get some help here.

Avoiding Unicode in Clay.com Emails to Prevent Spam Issues | Clay

11 comments

· Sorted by Oldest

Clay
APP
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The available documentation doesn't mention unicode characters being included in Claygent-generated emails or this causing spam issues. Our approach to avoiding spam filters focuses on sending relevant, compelling emails rather than large blasts of generic messages. What specific email content or formatting issues are you experiencing with your Claygent-generated emails?
Source: FAQ | Clay.com
Amir Dawoud
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Talk to a person
Bo (Clay)
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Hey — great question, and happy to clear this up. Claygent doesn’t automatically add spammy “Unicode” in the way you’re describing, but it’s true that AI-generated text can sometimes include invisible or special Unicode characters (like zero-width spaces or curly quotes) that might subtly affect deliverability. You don’t need to remove all Unicode — that would be overkill and would strip out useful characters like accented letters or em-dashes. But to keep your emails clean, you can add a prompt like: “Write in plain text using standard characters. Avoid invisible or special formatting characters.” This helps minimize any non-standard symbols that could cause issues with spam filters. Also, if you’re writing emails for cold outreach, other factors — like your domain reputation, SPF/DKIM setup, and wording — tend to matter more than character encoding. Let me know if you want help crafting a clean Claygent prompt for email generation.
Amir Dawoud
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Cleared it up pretty well, thanks!
Amir Dawoud
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Bo (Clay)
Amir Dawoud
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I found that one sentence a bit vague so went and created this "ASCII-ONLY OUTPUT (must pass) • Use only 7-bit ASCII: A–Z a–z 0–9 and basic punctuation . , ? ! ' " : ; - ( ) / & plus space and newlines. • Replace all non-ASCII with ASCII equivalents: ’ ‘ “ ” → ' " ; – — → - ; … → ... ; é/ñ/ü → e/n/u ; remove emojis and zero-width/non-breaking spaces. • Validation: If the output contains any char outside [\x0A\x0D\x20-\x7E], discard and regenerate until clean."
Amir Dawoud
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do you think it's a good idea adding this to the prompt?
Amir Dawoud
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Bo (Clay)
Amir Dawoud
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Bo (Clay)
Amir Dawoud
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you here?
Smit (Clay)
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Hi Amir, jumping in for Bo here. It's not a bad idea to add that to the prompt, do keep in mind that if you are using certain formatting like bold or italics, then it might not work. Let me know if you have further questions!

Clay
APP
·
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The available documentation doesn't mention unicode characters being included in Claygent-generated emails or this causing spam issues. Our approach to avoiding spam filters focuses on sending relevant, compelling emails rather than large blasts of generic messages. What specific email content or formatting issues are you experiencing with your Claygent-generated emails?
Source: FAQ | Clay.com
Amir Dawoud
·
·
Talk to a person
Bo (Clay)
·
·
Hey — great question, and happy to clear this up. Claygent doesn’t automatically add spammy “Unicode” in the way you’re describing, but it’s true that AI-generated text can sometimes include invisible or special Unicode characters (like zero-width spaces or curly quotes) that might subtly affect deliverability. You don’t need to remove all Unicode — that would be overkill and would strip out useful characters like accented letters or em-dashes. But to keep your emails clean, you can add a prompt like: “Write in plain text using standard characters. Avoid invisible or special formatting characters.” This helps minimize any non-standard symbols that could cause issues with spam filters. Also, if you’re writing emails for cold outreach, other factors — like your domain reputation, SPF/DKIM setup, and wording — tend to matter more than character encoding. Let me know if you want help crafting a clean Claygent prompt for email generation.
Amir Dawoud
·
·
Cleared it up pretty well, thanks!
Amir Dawoud
·
·
Bo (Clay)
Amir Dawoud
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·
I found that one sentence a bit vague so went and created this "ASCII-ONLY OUTPUT (must pass) • Use only 7-bit ASCII: A–Z a–z 0–9 and basic punctuation . , ? ! ' " : ; - ( ) / & plus space and newlines. • Replace all non-ASCII with ASCII equivalents: ’ ‘ “ ” → ' " ; – — → - ; … → ... ; é/ñ/ü → e/n/u ; remove emojis and zero-width/non-breaking spaces. • Validation: If the output contains any char outside [\x0A\x0D\x20-\x7E], discard and regenerate until clean."
Amir Dawoud
·
·
do you think it's a good idea adding this to the prompt?
Amir Dawoud
·
·
Bo (Clay)
Amir Dawoud
·
·
Bo (Clay)
Amir Dawoud
·
·
you here?
Smit (Clay)
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·
Hi Amir, jumping in for Bo here. It's not a bad idea to add that to the prompt, do keep in mind that if you are using certain formatting like bold or italics, then it might not work. Let me know if you have further questions!