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Signater

signater.com

From $1.92/mo Free plan WebiOSAndroidAPI
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Spec score 8.2 #13 of 28 in Digital Signature API Software

What it is

Signater is a digital contract service that lets businesses send, sign and track agreements through a browser. An envelope can gather several documents and signers into a sequential or parallel process, ending with a completion certificate. Signers can be checked using passwords, email or SMS codes, selfies with liveness checks, identity documents, facial biometrics or geolocation. Reusable templates hold standard text, with fields for variable details and a new version for each edit. The REST API can create and track envelopes, send them, upload documents, use templates, and retrieve signed files and certificates; API and webhook access is limited to Business and Enterprise plans. Webhooks send envelope events by POST and retry automatically. Signater lists HTTPS/TLS, HSTS and AES-256 encryption among its security measures, and signed PDFs can include embedded PAdES signatures, hashes and timestamps. Signers open links on phones or computers without an account or app. The platform and signing flow support six languages. A free plan includes three envelopes monthly; paid plans start at $39/mo.

Spec sheet

API
The REST Integration API can create, send and track envelopes, upload documents, use templates and retrieve signed files and certificates.Read 30 Sep 2026 · signater.com
Security
Signater uses HTTPS/TLS with HSTS, AES-256 encryption at rest, AES-256-GCM for secrets and PBKDF2 password derivation.Read 30 Sep 2026 · signater.com
Support
Signater directs customers to get answers about features, plans and implementation through WhatsApp, and Enterprise includes priority chat support.Read 30 Sep 2026 · signater.com
Headquarters
Miami, Florida, United States; Barueri, São Paulo, BrazilRead 28 Sep 2026 · signater.com
Founded
2020Read 28 Sep 2026 · signater.com
API availability
The API and webhooks are available on the Business and Enterprise plans.Read 30 Sep 2026 · docs.api.signater.com
Browser access
Signers use a browser link on phones or computers and do not need an app or Signater account.Read 30 Sep 2026 · signater.com
Core function
Signater lets businesses send, sign and track contracts digitally in minutes through a browser.Read 30 Sep 2026 · signater.com
Envelopes
An envelope combines multiple documents and signers in one sequential or parallel signing flow and ends with a completion certificate.Read 30 Sep 2026 · signater.com
Free tier
The free tier is free forever, includes three envelopes per month and requires no credit card.Read 30 Sep 2026 · signater.com
Identity verification
Identity checks include password, email OTP, SMS OTP, selfie with liveness, identity document, facial biometrics and geolocation.Read 30 Sep 2026 · signater.com
Languages
The platform, signing flow and messages are available in English, Portuguese, Spanish, French, German and Italian.Read 30 Sep 2026 · signater.com
Legal validity
Signater states that its electronic signatures are legally binding under the U.S. ESIGN Act, UETA and EU eIDAS.Read 30 Sep 2026 · signater.com
Signature standards
Signed PDFs use embedded PAdES signatures, SHA hashes, RFC 3161 timestamps and optional long-term validation.Read 30 Sep 2026 · signater.com
Templates
Templates keep recurring document text ready, with typed fields for variable content and a new version for each edit.Read 30 Sep 2026 · signater.com
Webhooks
Envelope events are delivered by webhook POST requests with automatic retries.Read 30 Sep 2026 · signater.com

Plans and prices

Free Free billed monthly 3 envelopes per month · 1 user · 3 signers per envelope · 2 documents per envelope · 5 MB maximum document size Read 19 Sep 2026 · signater.com
Starter $23 a year billed annually 360 envelopes upfront · Unlimited users · 20 signers per envelope · 20 documents per envelope · 25 MB maximum document size Read 19 Sep 2026 · signater.com
Business $47 a year billed annually 360 envelopes upfront · Unlimited users · 50 signers per envelope · 50 documents per envelope · 50 MB maximum document size Read 19 Sep 2026 · signater.com
Enterprise $299 a year billed annually 2,400 envelopes upfront · Unlimited users · Unlimited signers per envelope · Unlimited documents per envelope · 100 MB maximum document size Read 19 Sep 2026 · signater.com
Free Free $ 0 / month 3 envelopes/month · 1 user · 3 signers/envelope · 2 documents/envelope · 5 MB/document Read 30 Sep 2026 · signater.com
Starter $39 a month $ 39 / month; or $ 23 / month billed annually 30 envelopes/month · unlimited users · 20 signers/envelope · 20 documents/envelope · 25 MB/document Read 30 Sep 2026 · signater.com
Business $79 a month $ 79 / month; or $ 47 / month billed annually 30 envelopes/month · unlimited users · 50 signers/envelope · 50 documents/envelope · 50 MB/document Read 30 Sep 2026 · signater.com
Enterprise $499 a month $ 499 / month; or $ 299 / month billed annually 200 envelopes/month · unlimited users · unlimited signers/envelope · unlimited documents/envelope · 100 MB/document Read 30 Sep 2026 · signater.com

Every Signater plan and price →

Strong points and limits

Strong points

  • Sequential or parallel signing flows
  • Multiple identity verification options
  • Signers need no account or app
  • Free plan includes three envelopes monthly
  • API and webhooks on Business and Enterprise

Limits

  • Free plan limited to three envelopes monthly
  • API and webhooks require Business or Enterprise
  • No free trial

Who it suits

Signater suits businesses that need digital contract signing, reusable templates and envelope tracking. Its larger plans may suit teams that need API or webhook access.

Verdict

Signater covers contract preparation, signing and tracking, with several identity checks and signed-file retrieval. Check envelope limits and plan access before relying on its API or webhooks.

Where Specifiction places it

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