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SMSKap vs SingleFax

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

SMSKap compared with SingleFax
DetailSMSKap logo SMSKapSingleFax logo SingleFax
What it doesInstant SMS verification and virtual phone numbers for WhatsApp, Telegram and other platforms using real physical carrier SIM lines Send one-time faxes online from $0.99, pay only if delivered
StageNot given Not given
FoundedNot given Not given
Based inGB US
Pricing modelPaid Not given
PricingTurkey (+90) from 449.00 ₺; USA (+1) from 259.00 ₺; UK (+44) from 299.00 ₺. Price range USD 1.99 to 9.99. 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 (
Key features
  • SMS verification codes arrive within 30-60 seconds
  • 100% automatic refund if SMS code does not arrive
  • Zero KYC verification, no documents required
  • Support for WhatsApp, WhatsApp Business and Telegram
  • Available for Turkey, UK and USA locations
  • Live pricing and stock verification before each order
  • 24/7 live support via dashboard and Telegram bot
  • Official Telegram bot for direct number purchases and code delivery
  • Multiple payment methods including credit card, bank transfer and crypto
  • 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
What makes it different
  • Real physical carrier SIM lines instead of shared VOIP numbers
  • Zero risk of account bans because physical operator lines are used
  • Transparent refund process with automatic reimbursement
  • Curated number pool from reliable providers
  • Reseller program to sell numbers at custom margins
  • 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 planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)1 no change since last check25 no change since last check
Trust Flow (Majestic)101
Citation Flow (Majestic)2227
Referring domains (Majestic)836

5 details filled in for both companies.

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