How to Send Attachments to Buyers Through Amazon Seller Central Messaging
Amazon Seller Central now lets sellers attach up to five files per reply with a combined size limit of 10 MB. Accepted formats are PDF, JPG/JPEG, PNG and XML, and attachments are only allowed for certain contact reasons. This feature streamlines issue resolution and must follow content‑moderation rules.
Overview
Amazon’s Buyer‑Seller Messaging platform now lets sellers attach files directly when responding to buyer inquiries. The feature, available through Seller Central, supports up to five files per reply with a combined size limit of 10 MB. Sellers who understand the attachment rules can resolve issues faster while staying within Amazon’s communication policies.
Key Points
- Maximum attachments per reply — Up to five files can be added to a single message, allowing sellers to bundle an invoice, a return label, and a product guide in one response.
- Total size ceiling — All attached files together must not exceed 10 MB; a 6 MB PDF plus three 1 MB images would meet the limit, but a 9 MB PDF plus a 3 MB image would be rejected.
- Accepted formats — Amazon only delivers PDFs, JPG/JPEG, PNG, and XML files; attempts to send Word documents or ZIP archives will be blocked.
- Content moderation — Attachments containing promotional material, profanity, or unrelated content are removed automatically, so every file should be directly tied to the buyer’s question.
- Channel‑specific support – Not every messaging reason (e.g., “Request for product review”) permits attachments; sellers must verify that the selected contact reason allows file uploads.
How Attachments Work in Buyer‑Seller Messaging
- Open the buyer’s inquiry — From the “Messages” inbox, click the conversation that needs a response. Example: a buyer asks for a proof of purchase for a warranty claim.
- Compose the reply — Type the answer in the text box, then click the paper‑clip icon to attach files. Example: upload a PDF invoice and a PNG image of the product serial number.
- Upload and verify — Select files from your computer; the system shows each file’s name and size. Ensure the total does not surpass 10 MB. Example: a 4 MB PDF + two 2 MB JPGs = 8 MB, which is acceptable.
- Send the message — Click “Send.” Amazon processes the attachments and delivers them to the buyer’s Amazon Messaging inbox. Example: the buyer receives the invoice PDF and can download it instantly.
Analysis & Recommendations
Why This Matters
Attachments let sellers send invoices, return labels or product guides in a single message, reducing back‑and‑forth and improving buyer‑satisfaction scores. Staying within the 5‑file/10 MB limits and using approved formats avoids message rejections that could hurt response‑time metrics.
Key Takeaways
- Maximum of 5 attachments per message with a total size cap of 10 MB.
- Supported file types are PDF, JPG/JPEG, PNG, and XML; .docx or .zip are blocked.
- Attachments are only permitted for contact reasons that allow file uploads, such as “Order Issue” or “Return/Refund”.
- Content containing promotional material or profanity is automatically stripped, resulting in a text‑only reply.
Recommended Actions
- →In Seller Central, open Messages > select the inquiry, verify the contact reason allows attachments, then click the paper‑clip icon to add files.
- →Before uploading, ensure total file size ≤10 MB and formats are PDF, JPG/JPEG, PNG, or XML; rename files clearly (e.g., "Invoice_12345.pdf").
- →Compress large images (e.g., using TinyPNG) and split oversized PDFs to stay within limits, then send the reply.
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