If I already use Box, isn't SignRequest the obvious choice?

If your workflow lives in Box and you want signed docs auto-routed to Box folders, yes. AttachKit produces a downloaded PDF you'd manually upload — workable but extra clicks.

Can AttachKit hit SignRequest's API for hybrid use?

Not currently. AttachKit doesn't expose an API yet. If you need that level of automation, SignRequest's API + webhooks is the better choice today.

Alternative · SignRequest

AttachKit vs. SignRequest — both simple, AttachKit is more private

SignRequest: Box-owned e-signature with a focus on simplicity and lower pricing than DocuSign.

SignRequest is one of the cleaner e-signature tools — Box acquired it in 2021. The UX is good, pricing is reasonable. Compared to AttachKit, SignRequest still uploads your PDFs to a cloud and requires a per-user plan; AttachKit keeps PDFs in your browser and charges a single $12/mo (or $120/yr) regardless of users.

Try AttachKit free Fill a form free

Why pick AttachKit for these cases

Roughly half the price.
Box holds your plaintext; we encrypt in your browser and store ciphertext only, keeping no key.
AI auto-fill + AI redact included.

Side-by-side

A marks the side with the genuine advantage on that row — honestly, including the few where SignRequest wins.

Price

SignRequestProfessional ~$12/user/mo (€9); Business ~$17/user/mo (€15). Per-user.

AttachKit$12/mo flat — covers everyone. No per-user fees.

Where your PDF goes

SignRequestUploaded to the Box / SignRequest cloud.

AttachKitSelf-sign never leaves the browser. Send-to-sign uploads a copy encrypted in your browser — we store ciphertext only and keep no key, though by default the key rides in the emailed link.

AI auto-fill & redaction

SignRequestMinimal — basic signing only.

AttachKitAI auto-fill from your profile + AI PII redaction, included.

Recipient signup

SignRequestRecipient signs without an account.

AttachKitSame — no account, ever.

Box integration

SignRequestDeep — auto-saves signed docs to Box folders.

AttachKitNone — download the signed PDF and save it anywhere.

	SignRequest	AttachKit
Price	Professional ~$12/user/mo (€9); Business ~$17/user/mo (€15). Per-user.	$12/mo flat — covers everyone. No per-user fees.
Where your PDF goes	Uploaded to the Box / SignRequest cloud.	Self-sign never leaves the browser. Send-to-sign uploads a copy encrypted in your browser — we store ciphertext only and keep no key, though by default the key rides in the emailed link.
AI auto-fill & redaction	Minimal — basic signing only.	AI auto-fill from your profile + AI PII redaction, included.
Recipient signup	Recipient signs without an account.	Same — no account, ever.
Box integration	Deep — auto-saves signed docs to Box folders.	None — download the signed PDF and save it anywhere.

Switching questions, answered

If I already use Box, isn't SignRequest the obvious choice?: If your workflow lives in Box and you want signed docs auto-routed to Box folders, yes. AttachKit produces a downloaded PDF you'd manually upload — workable but extra clicks.
Can AttachKit hit SignRequest's API for hybrid use?: Not currently. AttachKit doesn't expose an API yet. If you need that level of automation, SignRequest's API + webhooks is the better choice today.

Try AttachKit now

Drop a PDF — no signup. Unlimited fill & redact in your browser, plus 10 free signed PDFs every month.

Sign a PDF Fill a form Redact PII See all forms

Switching for good? Save your details once — every future form auto-fills.