Dext Costs vs Sales Email Addresses: Which Inbox Should You Use?

Dext Extract by email is not one generic inbox. Dext documents dedicated addresses for Costs and Sales, and each of those can use Single or Multiple processing. Users and accounts also have different address types, which affects ownership. The right destination depends on what the document is, how the file is packaged, and who should review it after Dext receives it.

Use Costs when the document represents money leaving the business: supplier bills, purchase invoices, card receipts, expense receipts, credit card proofs, and similar purchase-side paperwork. Use Sales when the document represents money coming in from customers: invoices you issued, sales credit notes, or other customer-facing sales paperwork.

Then choose Single or Multiple. Single means one document per file, even if that file has several pages. Multiple means one document per page. Finally, decide whether the user-level address or account-level address fits ownership and visibility.

Dext describes Extract by email as unique addresses that receive receipts, invoices, and other paperwork. The current help article says each user and account gets addresses for both Costs and Sales, with Single and Multiple processing modes. That is the source of most confusion: the addresses look related, but they do different jobs.

A Costs Single address, usually on the @dext.cc domain, is for routine purchase-side documents where each attached file should become one Costs item. A Sales Single address is for sales-side documents where each attached file should become one Sales item. Dext notes that Sales items use an address ending in +sales@dext.cc, but users should copy the exact address shown in their own Dext account rather than constructing it from memory.

A Costs Multiple address, on @multiple.dext.cc, is for purchase-side batch PDFs where each page is a different document. A Sales Multiple address applies the same behavior to sales-side batch PDFs. Do not treat @multiple.dext.cc as a general upgrade. It is the wrong choice for one invoice that happens to be several pages long.

The Costs destination is the default mental model for most receipt forwarding. If a vendor charged the business, if an employee paid with a card, or if a supplier sent an invoice that needs to become a payable or expense record, start with Costs. That includes SaaS subscription invoices, travel receipts, office supply receipts, contractor bills, vendor invoices, and purchase credit notes.

Costs is also where most email-heavy receipt cleanup starts. A Gmail or Outlook inbox may contain order confirmations, refund alerts, portal links, card receipts, and supplier invoices in the same sender thread. The routing question is whether the attachment or body proof belongs in Dext Costs for review and possible publishing.

Use the Costs Single address for normal supplier PDFs, receipt photos, and emailed documents where one attachment equals one item. Use the Costs Multiple address only when a PDF is a stack of separate one-page documents. If the supplier sends a three-page invoice with terms on page two and banking details on page three, Multiple would split one document into three items. That creates cleanup work rather than better extraction.

Sales is for documents your business issued to customers or otherwise treats as income-side paperwork. If the document is a customer invoice, a sales credit note, or a sales receipt that belongs in the customer side of the workflow, use the Sales Extract by email address shown in Dext.

The common mistake is sending a customer invoice to the Costs address because the email came from the same inbox or because the user copied only one Dext address into a forwarding rule. Dext can receive the document, but the destination decides whether it lands in the Costs or Sales workspace. Mixing those destinations makes review harder and can confuse the publish step.

Sales also has a Single vs Multiple decision. A normal customer invoice PDF belongs on the Sales Single address. A batch PDF where each page is a separate sales invoice belongs on the Sales Multiple address. As with Costs, the test is page meaning, not page count.

Single vs Multiple is a file-splitting decision. Dext says Single treats each attached file as one item, and Multiple treats each page in a multi-page file as a separate item. Multiple is built for batch PDFs of individual receipts, not for long invoices or statements that must remain together.

Dext current file guidance lists Costs and Sales formats including common image formats, PDF, HTML for email submissions, DOC, DOCX, ODT, RTF, HEIC, and ZIP files that contain supported file types. It also lists image and ZIP size limits and a PDF rule for multi-item documents: up to 200 items, one item per page.

There are important limits. Dext says it cannot extract password-protected attachments or documents from hyperlinks. If an email only says "view invoice" and links to a portal, do not expect forwarding the link to create a clean Dext item. Download the document first, or keep the email in a review workflow until a person can retrieve the file.

Dext separates user-level and account-level Extract by email addresses. The current Dext help says sending to a user address assigns that user as the Document owner, while sending to an account-level address leaves the owner blank. Dext also notes that only users with access to all documents can see documents without a Document owner.

That distinction matters for accountants and bookkeepers. A named user address can keep client submissions tied to a known reviewer. An account-level address can be useful when a practice wants a shared intake point, but the team must understand who can see unassigned documents and who receives notifications for them.

Forwarding setup can also depend on notifications. Dext says account-level forwarding may require email notifications so provider verification messages are delivered correctly. If a provider sends a verification code or link to a Dext address that no one can open, the forwarding rule may never start. For account-level addresses, Dext documents selecting a user under Business settings > Extraction > Email notifications for documents with no owner.

A bookkeeping practice should not solve this by telling each client to forward all paperwork to one saved Dext address. Clients receive different document classes in the same inbox: supplier invoices, sales invoices, card receipts, and portal alerts. Those should not all flow to the same destination without review.

The cleaner practice workflow is a routing matrix. For each client, record the Costs Single, Costs Multiple, Sales Single, and Sales Multiple destinations that apply. Then decide whether submissions should use the client user address, a practice user address, or the account-level address. A recurring supplier invoice can route to Costs Single, while a portal notification can stay in review until the file is available.

Always verify the address inside Dext before creating a new forwarding rule, copying an address into Expensent, onboarding a client, changing who reviews documents, or troubleshooting missing items. Dext lets users customize Extract by email address prefixes, and admins can edit another user address. Old screenshots, saved contacts, and Receipt Bank-era bookmarks are not reliable enough for a new rule.

Verify again when documents land in the wrong workspace, when a multi-page PDF does not split as expected, when a Sales document appears in Costs, when ownership is blank unexpectedly, or when an account-level forwarding verification message never arrives. After a test send, check workspace, owner, status, and whether the item can be published or exported. Dext says To review means something is missing or incorrect, while Ready means checks have passed.

Dext extracts, reviews, publishes, and exports documents after they arrive. Expensent sits upstream of that handoff. It helps find likely invoice and receipt emails across connected inboxes, group them by next action, and forward selected or rule-matched messages to the Dext destination you configure.

That distinction matters. Expensent is not a replacement for Dext extraction, Dext publishing, accounting software, document retention, or bookkeeping review. It is useful when the hard part is upstream: clients forget to forward documents, historical receipts are still in the inbox, or the same mailbox contains Costs, Sales, portal links, and noise.

For Dext specifically, Expensent should be configured with the exact Costs, Sales, Single, Multiple, user, or account address that fits the workflow. Use it to route clean recurring patterns after review, keep ambiguous emails visible, and avoid broad sender-only rules that send the wrong document class to Dext.