Why do I get 'ConversationId isn't supported' error when sending emails with Microsoft accounts?

Encountering the Error: 'ConversationId Isn’t Supported in the Context of This Operation'

When sending emails via the Nylas API with Microsoft accounts, you may encounter the following error:

‘ConversationId isn’t supported in the context of this operation’

This error can occur if you use a thread ID instead of a message ID in the reply_to_message_id parameter.

Common Cause

This issue arises because thread IDs and message IDs serve different purposes. Microsoft accounts specifically require the message ID for reply operations:

• Message ID: A unique identifier for a specific email message.
• Thread ID: Groups related messages in a conversation.

Using a thread ID instead of the required message ID results in this error.

Solution

When replying to an email using the /v3/grants/{grant_id}/messages endpoint:

1. Use the correct message ID in the reply_to_message_id parameter.
2. Retrieve the message ID from the metadata of the original message.
3. Do not use thread IDs for reply operations with Microsoft accounts.

By ensuring the correct usage of message IDs, you can avoid this error and successfully reply to emails through the Nylas API with Microsoft accounts. If you need additional assistance, feel free to contact our support team.

Updated January 07, 2025 00:46