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fix: update Message-ID format to include timestamp for uniqueness #386

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Merged
bayger merged 1 commit into from
Jun 24, 2026
Merged

fix: update Message-ID format to include timestamp for uniqueness #386

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8 changes: 5 additions & 3 deletions src/channels/email/shared/MessageIdUtils.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -13,8 +13,9 @@ export function extractDomainFromEmail(email?: string): string | undefined {
* Generates a unique Message-ID for an email.
*
* When a conversation ID is provided, the format is:
* <{uuid}.{YYYYMMDD}.{HHMMSS}@domain>
* where {uuid} is the conversation ID without the "conv_" prefix.
* <{uuid}.{timestamp}@domain>
* where {uuid} is the conversation ID without the "conv_" prefix,
* and {timestamp} is Date.now() in base-36 to ensure uniqueness per message.
*
* Falls back to a random ID if no conversation ID is provided.
* Uses the given domain, or `bonsai.ai` as a last resort.
Expand All @@ -24,7 +25,8 @@ export function generateEmailMessageId(conversationId?: string, domain?: string)

if (conversationId) {
const id = conversationId.replace(/^conv_/, '').replace(/-/g, '');
return `<${id}@${fallbackDomain}>`;
const timestamp = Date.now().toString(36);
return `<${id}.${timestamp}@${fallbackDomain}>`;
}

return `<${randomBytes(16).toString('hex')}@${fallbackDomain}>`;
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