SingleFax vs E-Invoice Map

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

SingleFax compared with E-Invoice Map
Detail	SingleFax	E-Invoice Map
What it does	Send one-time faxes online from $0.99, pay only if delivered	Free Peppol lookup, e-invoice viewer, deadlines and provider comparisons
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	ES
Pricing model	Not given	Freemium
Pricing	One-time fax: from $0.99 for up to 10 pages, then $0.08 per extra page (max 1,000 pages), pay only if delivered. 30-day fax number: $4.99 one-time payment. Lifetime Basic fax number: $97 one-time payment. Lifetime Pro fax number: $147 one-time payment. Standard Plan (monthly): $6.58/mo or $79/year (	Free: €0/month or €0/year (3 IDs own registration, 25 IDs customer Watch, 100 rows bulk check, 1 user). Starter: €19/month or €190/year (10 IDs own registration, 1,000 IDs customer Watch, 1,000 rows bulk check, 3 months change history, 1 user). Business: €59/month or €590/year (25 IDs own registrati
Key features	Send faxes from browser, email, or mobile app Pay only if delivery succeeds Support for up to 1,000 pages per fax Timestamped delivery confirmation Searchable AI transcripts for received faxes HIPAA Secure workflow with signed BAA IRS form filing with carrier proof Chrome extension for PDF faxing	E-invoice file viewer - open UBL, CII, XRechnung and Factur-X files in browser Bulk check - validate up to 100 numbers at once in free plan Validation error explanations - error messages in plain language Customer watch lists - automatic daily monitoring with email alerts on changes API access - lookup API and webhooks for developers Onboarding messages - ready-to-send letters to help customers join Peppol Client workspace management for accountants - separate lists per client with monthly reports
What makes it different	No account or subscription required for one-time faxes Pay only if fax delivers successfully Integrated IRS filing with official transmission proof Lifetime fax numbers with no monthly rental fees	Free to use - all core tools (lookup, viewer, validator) require no account or payment No file upload needed - open and validate e-invoices directly in your browser Independent and neutral - not affiliated with OpenPeppol and does not sell e-invoicing services Multi-language coverage - available in 5 languages for 9 countries
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	25 no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	1	0
Citation Flow (Majestic)	27	21
Referring domains (Majestic)	36	11

5 details filled in for both companies.

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