Legal teams are professionally skeptical of software — with reason. The signature is often the only artifact a court will see years later. Whether you run a firm sending engagement letters or in-house counsel closing vendor MSAs, the bar is higher than “the email link worked.” Counsel wants attribution, integrity, and an export that does not embarrass you in discovery.
Documents legal teams sign constantly
- Engagement letters and fee agreements — firm and client, sometimes with conflicts checks documented
- NDAs and mutual confidentiality agreements — often the first document in a deal
- Master services and vendor agreements — sequential internal approval then counterparty
- Settlement and release agreements — strict routing and version control
- Corporate resolutions and secretary certificates — multiple authorized signers
- Amendments and side letters — high frequency, must attach to the correct base agreement
What counsel asks before approving a platform
- Can we prove who signed and that they saw the final PDF?
- Is the audit log append-only and exportable?
- What happens if a signer email was wrong — can we replace without voiding?
- Does the completed PDF embed signatures or rely on a proprietary viewer?
- Where is data stored and who can access it internally?
- Can we brand the experience so clients are not confused by a vendor portal?
Common failure modes
Legal teams often inherit whatever IT bought for the sales org. Problems appear under volume: per-envelope quotas encourage skipping signatures on low-priority docs; sequential routing is bolted on awkwardly; void and replace-signer flows lack audit entries; and the certificate of completion is a dashboard-only download that automation cannot retrieve.
Where SumoSign fits
SumoSign is designed for teams that treat the signing experience as part of the professional relationship — custom domains, multi-party routing with void/replace/resend, PDF flattening so the executed file stands alone, and evidence bundles (signed PDF + certificate + audit JSON) counsel can actually use. Agent/API access is available with explicit actor attribution; agents do not sign on behalf of clients unless your engagement model says otherwise.
Evidence you would not be embarrassed to produce.
SumoSign: branded multi-party signing, append-only audit trail, exportable certificate of completion.
Get startedFrequently asked questions
Will courts accept electronically signed engagement letters?
Under ESIGN/UETA and equivalent laws, yes for most agreements — provided intent, consent, and record integrity are demonstrated. The quality of your audit evidence matters when challenged.
Can we require an access code for sensitive agreements?
Yes — optional access codes and email verification add a lightweight identity layer sender-controlled per envelope.
Does SumoSign support sequential internal approval before sending externally?
Sequential routing supports ordered signers on one envelope — useful for partner review then client signature on the same packet.