Comparison

Email attachments vs secure upload links

Email is the default because it's frictionless to start. But 'email me the certificate' quietly creates most of the mess in supplier document work. Here's how upload links compare, for you and for the person on the other end, with the security and audit implications spelt out.

6 min read Updated 28 July 2026

What each experience actually feels like

Email: chase, wait, resend, unzip, rename, refile, forget where it went. Upload link: click, drag, done, on both sides. Once a team has tried a proper link flow, it rarely goes back. The recipient's experience matters as much as yours: friendlier requests get answered faster.

The comparison

FactorEmail attachmentCredbase upload link
Recipient effortFind file, attach, write reply, sendClick, drag, drop
Account requiredNo, but your email address is exposedNo account for the recipient
Attachment size limitsAround 20MBMulti-GB per file
Structured metadata capturedNoneType, expiry, notes, contact
SecurityCopies live in inboxes forever, on both sidesTime-limited, revocable, encrypted at rest
Where the file ends upSomeone's inbox, then a drive if you're luckyStraight into a typed record
Audit trailBuried in email threadsTimestamped per upload and per view
Response rateBaselineTypically meaningfully higher
ChasingManual, easy to forgetAutomatic reminders on your schedule
Rebranding for your businessYour email footerYour logo and colour on the upload page

The security piece deserves its own paragraph

Certificates of insurance, DBS checks, right to work documents and DPAs often contain sensitive data. Sending them through email means copies live in inboxes forever on both sides and are subject to any breach of either mailbox. Upload links deliver the document straight into an encrypted record, then expire. The audit trail sits with you, not with the sender's IT team.

Do recipients actually prefer it?

Yes, overwhelmingly. Recipients like that there's nothing to sign up for, that the page shows exactly what's needed and that they get a confirmation the moment the file lands. It reflects well on the requester too. A calm, branded upload page implies a calm, organised business behind it.

What Credbase adds beyond a generic upload link

  • AI drafts document type and expiry on upload, a human approves before it saves.
  • The link is scoped to a specific request, so a recipient can't accidentally see or upload against another company.
  • Links carry your branding and open in any browser.
  • Automatic reminders chase politely on your schedule so you don't have to.
  • The upload lands directly against the right supplier record, not in an inbox to be refiled.

How to try Credbase without any risk

Send your next document request as a Credbase upload link instead of an email. Free plan, no card. If the recipient doesn't visibly find it easier, keep emailing. If they do, you've quietly upgraded your whole operation.

Frequently asked questions

Put this into practice today.

Start a free Credbase workspace, add your first supplier and share a live evidence pack in ten minutes.