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gmail_get_attachment Download and read the content of an email attachment from Gmail. Requires the messageId and attachmentId from the attachments list returned by gmail_get_message or gmail_get_thread. PDFs are extracted to text server-side. Text-based files (CSV, JSON, TXT, HTML, XML) are returned as text. All other formats (DOCX, XLSX, images, etc.) are returned as raw base64 for direct reading.

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Parameters

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messageId
string
required
Gmail message ID that contains the attachment.
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attachmentId
string
required
Attachment ID from the message’s attachments list.
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filename
string
Original filename (from attachments list) — used for format detection.
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mimeType
string
MIME type of the attachment (from attachments list).