How to choose an e-signature service

Every provider will tell you it's the best. The useful question isn't “which is best?” — it's “which matches how I actually sign?” Work through these seven, and the shortlist narrows itself.

1. How many documents will you send?

Volume drives cost more than anything. Many plans cap the number of “envelopes” or signature requests per user per year, with overage fees beyond that. If you send a handful a month, a free tier or flat-fee plan is plenty. If you send hundreds, look closely at per-envelope limits and whether a flat-fee model (unlimited documents) works out cheaper than per-user pricing.

2. Who signs — just you, or a team?

Single users are served well by low-cost individual plans. Teams need to think about per-seat pricing, minimum user counts (some plans require two or more seats), shared templates, and centralised administration. A tool that's cheap for one person can get expensive fast across a department.

3. What level of identity assurance do you need?

For routine documents, an emailed signing link is fine. For high-value or regulated agreements, you'll want stronger signer authentication — SMS codes, knowledge-based questions, government-ID checks, or advanced/qualified signatures (AES/QES) in the EU. Check that your shortlisted tools offer the level you need, and whether it costs extra.

4. Which compliance standards apply to you?

If you handle health data, look for HIPAA support and a BAA. Life sciences often need FDA 21 CFR Part 11. Government work may require FedRAMP. Most businesses should at least want SOC 2 and ISO 27001. Crucially, check which tier includes the standard you need — compliance features are often locked to higher plans.

5. What does it need to connect to?

Signing rarely happens in isolation. If your contracts live in Salesforce, your files in Google Drive or Dropbox, or your workflow in Microsoft 365, native integrations save real time. If you're a developer embedding signing into your own product, the quality and pricing of the API matters most — and API plans are usually separate from standard seats.

6. How is it priced — and what's the real total?

Three models dominate: per-user/month, flat-fee, and per-envelope. The advertised number is usually the annual rate; month-to-month costs more, and “save up to 33%” sometimes just means paying 12 months upfront. Add up the realistic total: seats × months, plus overage, plus any add-ons (SMS, ID verification, extra senders) you'll actually use.

7. Can you get your records out?

You're responsible for retaining signed documents. Make sure you can export completed files and their certificates in a standard format, and that losing or downgrading the account doesn't trap your records. Avoid making a free tier your only store of important agreements.

Put it together

Score your two or three finalists against the questions that matter most to you — usually volume, compliance and integrations. The “best” service is simply the one that clears your must-haves at a total cost you're comfortable with. When two are close, a free trial on the real documents you send settles it quickly.