Signater

Overview

Signater is a browser-based contract signing service for businesses that need to route agreements among multiple people or connect signing to internal systems. It is a stronger fit for teams that value configurable identity checks and structured workflows than for occasional users needing a large free allowance.

Its envelope model, signer verification options and signed-file retrieval cover a broad business workflow, but the free tier stops at three envelopes a month and API access begins at Business.

Key features

An envelope bundles documents and signers into either a sequential or parallel signing flow, then produces a completion certificate. That structure suits agreements involving several parties; per-envelope signer and document caps determine how complex a workflow each plan can accommodate.

Identity options include passwords, email and SMS one-time codes, selfie liveness, identity documents, facial biometrics and geolocation. The range gives businesses room to choose checks appropriate to their process, rather than forcing every signer through one method. Signers use a browser link on a phone or computer without installing an app or creating an account, which removes a setup step for outside participants.

Templates retain recurring text, use typed fields for variable content and create a new version when edited. The REST API can create, send and track envelopes, upload documents, use templates and retrieve signed files and certificates. Webhooks deliver envelope events through POST requests with automatic retries. Workflow status API, signed-file retrieval and a sandbox are also available, but the API and webhooks are limited to Business and Enterprise, leaving Starter for teams that do not need those integrations.

Signater uses HTTPS/TLS with HSTS, AES-256 encryption at rest, AES-256-GCM for secrets and PBKDF2 password derivation. Signed PDFs use embedded PAdES signatures, SHA hashes and RFC 3161 timestamps, with optional long-term validation. Signater says its electronic signatures are legally binding under the U.S. ESIGN Act, UETA and EU eIDAS. The platform, signing flow and messages support English, Portuguese, Spanish, French, German and Italian.

Pricing

The Free plan costs nothing and is free forever, with no credit card required. It allows 3 envelopes/month, 1 user, 3 signers/envelope, 2 documents/envelope and 5 MB/document. That is useful for light individual use, but the envelope cap and single seat make it a limited option for a working team.

Starter costs $39 a month, or $ 23 / month billed annually. It raises the allowance to 30 envelopes/month, provides unlimited users, and supports 20 signers and 20 documents per envelope, with 25 MB/document. This is the practical entry point for teams sharing routine signing work, provided they do not need API or webhook access.

Business costs $79 a month, or $ 47 / month billed annually. It keeps the 30-envelope monthly limit but raises per-envelope allowances to 50 signers and 50 documents, with 50 MB/document, and includes API and webhooks. It suits teams whose integration need justifies the higher price; those sending more than 30 envelopes a month will still hit the same quota as Starter.

Enterprise costs $499 a month, or $ 299 / month billed annually. It includes 200 envelopes/month, unlimited users, signers and documents per envelope, and 100 MB/document, as well as API and webhooks. Its larger quotas and unlimited envelope composition fit heavier or more complex workflows, while Enterprise also adds priority chat support. There is no free trial.

Platforms

Signater supports web, Android and iOS, as well as API access on eligible plans. Since signers can complete a browser-link flow without an app or account, businesses can send agreements to people outside their organization without requiring them to adopt the service.

Who it's for

Signater is best for businesses with recurring contracts, multi-party signing flows or a need to retrieve signed files and certificates through an integration. Its multiple verification methods and multilingual signing flow can also help teams serving signers across different locations. Occasional users can try the free tier, but three envelopes per month and one user are restrictive; teams that need integrations must budget for Business rather than Starter.

Pros and cons

• Pros: Multiple identity checks, including selfie liveness and facial biometrics, give businesses more control over signer verification.
• Pros: Sequential or parallel envelopes end with completion certificates, accommodating multi-party agreements in one workflow.
• Pros: API workflows include envelope status, signed-file retrieval, certificates and retrying webhooks, useful for connecting signing to business systems.
• Cons: The free plan allows just three envelopes monthly and one user, limiting its usefulness for regular team work.
• Cons: API and webhook access starts at Business, despite Starter supporting unlimited users.
• Cons: Business remains capped at 30 envelopes per month; higher-volume use requires Enterprise.

Alternatives

For a wider comparison, browse Digital Signature API Software. Consider PandaDoc if its free plan's yearly 60-document allowance and two-recipient limit better match your signing volume. Dropbox Sign API is another option, with a free package of up to three signature requests monthly and a test mode for building and testing the API.

Skribble may suit a team comparing per-signature pricing, with its Starter plan charging by signature and distinguishing SES, AES and QES rates. Xodo Sign is worth considering when a small free API sandbox allowance is enough: its free plan includes up to two production API documents, one document per week, one signer, one seat and no active templates. BoldSign offers a free Essential plan with 25 envelopes per month, two templates and one user, which may fit a solo user prioritizing envelope volume.

PearSign is another freemium option with three envelopes per month on its free plan. Documenso is an alternative for readers interested in software its maker describes as open source. DocuSeal offers a free Basic plan with 10 field types and 10 request emails per month.

Verdict

Choose Signater if your business needs configurable identity checks, multi-party envelope flows and a path to API-based signing with signed-file retrieval. Its clearest limitation is the gap between plans: Starter has no API or webhook access, while Business still allows only 30 envelopes monthly. Teams with light needs can start free, but those needing integrated or higher-volume workflows should weigh whether Enterprise's price and capacity fit their operation.