eMudhra vs RPost eSignature India
eMudhra issues the licensed DSC your MCA and GST filings need. RPost proves an email was sent, opened and unaltered, with RSign layered on top.
eMudhra vs RPost at a glance
Both brands in one view. Where each one wins, and where the ASP network changes the answer.
eMudhra
- What it is
- India’s largest licensed Certifying Authority, issuing Class 3 Digital Signature Certificates and running the emSigner eSignature platform.
- Legal basis
- Licensed under India’s Controller of Certifying Authorities since 2008, WebTrust-accredited globally, since renamed from its 2008 incorporation as 3i Infotech Consumer Services.
- Pricing
- Class 3 Individual DSC runs roughly Rs 1,350-2,250 for one to three years; Class 3 Combo with encryption Rs 2,000-3,350; FIPS token around Rs 600.
- Desktop friction
- emSigner and emBridge token utilities are version-sensitive, with no macOS or Linux support.
- Market reality
- DSC volumes fell after Income Tax dropped the mandatory-certificate rule for tax-audit individuals; FY26 revenue guidance still Rs 700 crore.
- Ownership
- NSE and BSE-listed Indian company since its May 2022 IPO, India’s own Certifying Authority since 2008.
RPost
- What it is
- US-based registered email and e-signature SaaS, built on 50-plus patents covering legal proof of email delivery, opening and content.
- Legal basis
- Registered Receipt technology gives court-admissible proof an email was sent, delivered and read unaltered, distinct from a licensed Indian DSC.
- Pricing
- RSign lists from roughly $7 per user per month, positioned at about half the cost of incumbent e-signature tools at scale.
- Interface friction
- Signing UI and Outlook plugin setup draw complaints as dated next to DocuSign, with occasional plugin crashes and clock-sync issues.
- India presence
- Distributed via the Ingram Micro Cloud Marketplace India since 2021 and SoftwareOne; no dedicated India DSC licensing.
- Ownership
- Independent, privately held US company (Los Angeles), the US GAO its first customer since 2002.
The eMudhra and RPost ranges Sirius Star supplies
Two picks from each brand. We size the mix in the free 30-minute review.
eMudhra Class 3 Individual DSC
The certificate most Indian professionals and directors need for MCA, income tax and GST filings.
- Valid 1, 2 or 3-year tenures
- Signs MCA, IT and GST filings
- FIPS token included on Combo plans
emSigner Enterprise
The platform pick for businesses that need bulk signing workflows, not just individual certificates.
- Bulk document signing workflows
- SecurePass identity and access layer
- WebTrust-accredited PKI backbone
RMail Business
Registered email with legal proof of delivery, encryption and tracking for contracts, notices and disputes.
- Registered Receipt proof of send, delivery and content
- Smart encryption for sensitive attachments
- Outlook and desktop plugin delivery
RSign Enterprise
RPost’s e-signature platform, priced below incumbent tools at scale, for teams that want signing without the DSC overhead.
- From roughly $7 per user per month
- Combined Outlook and desktop signing app
- RDocs rights management add-on available
eMudhra vs RPost: feature by feature
The specifics that decide the buy, for the Indian buyer.
| Feature | eMudhra | RPost |
|---|---|---|
| Core product | Licensed Indian Certifying Authority plus emSigner platform | Registered email delivery proof plus RSign e-signature |
| Legal basis | Licensed under India’s CCA since 2008, WebTrust-accredited globally | 50-plus patents in 23 countries covering e-delivery proof and encryption |
| Best for | Statutory filings: MCA, income tax, GST, tenders, ICEGATE, GeM | Proving a specific email was sent, opened and unaltered in a dispute |
| Certificate vs proof | Sells the actual DSC token plus a signing platform on top | Sells delivery-proof and signing tools, not a personal digital certificate |
| Pricing model | Per-certificate DSC pricing plus a platform subscription for emSigner | Per-user subscription, RSign from roughly $7 per user per month |
| Desktop reliability | emBridge token utility is version-sensitive, no macOS or Linux support | Outlook plugin setup is tedious, with occasional crashes and clock-sync issues |
| Brand recognition | India’s largest licensed CA, well known to auditors and government portals | Small vendor footprint; recipients and IT teams often unfamiliar with the brand |
| India distribution | Direct India entity, official INR retail price list since July 2024 | Ingram Micro Cloud Marketplace India and SoftwareOne, since 2021 |
Which one for what
The clean decision guide for common Indian B2B scenarios. Pick the row that fits.
You need a personal DSC for MCA, GST or income tax filing
eMudhra. RPost does not issue government-recognised digital signature certificates. This is eMudhra’s core business.
You need legal proof a contract notice was sent and read
RPost. Registered Receipt technology proves delivery, opening and content, which a DSC alone does not cover.
Your finance team files GST, TDS or tenders that mandate a DSC
eMudhra. Its Class 3 Combo and token options are built specifically for these statutory filings.
You want the lowest per-seat signing cost at scale
RPost. RSign is positioned at roughly half the cost of incumbent e-signature tools once you are past a handful of signatories.
How Sirius Star sizes eMudhra or RPost
Free review first. Then a written quote in 24 working hours.
Site survey + sizing
Free 30-min call. We map load, refresh cycle, and current estate.
Both brands quoted
Written quote in 24 working hours. Itemised. GST broken out.
PO and dispatch from Vashi
Typical 10 working days for stock SKUs. Staggered rollout if multi-site.
Warranty and refresh wrap
One escalation path. Refresh calendar in writing. Buyback where offered.
Choosing an eSignature tool in India: eMudhra DSC or RPost proof
- When you need a licensed DSC versus registered delivery proof
- A DPDP-ready audit trail checklist
- A 12-month cost comparison template
eMudhra vs RPost in India FAQ
Common questions Indian buyers ask. Answers grounded in current sources.
Can RPost replace eMudhra for statutory filings?
Do I need eMudhra even if I already use RPost for contracts?
Is RPost’s Registered Receipt legally recognised in India?
Which is cheaper for a small business?
Can Sirius Star set up both for us?
Ready for a sized eMudhra/RPost quote?
Tell us your load and city. We ship both brands, honestly.
Pair this on one PO
What buyers typically add to a Sirius Star order.
Related reading from the Sirius Star blog
Long-form context from our team.
Sources referenced
- RPost RMail reviews– g2.com
- RMail reviews on TrustRadius– trustradius.com
- IDC India Identity and Digital Trust tracker– idc.com