Is there a totally free fax app?

Yes. FaxBurner lets you send your first fax completely free with no credit card required. Fax.Plus also offers a free tier for up to 5 faxes monthly. However, free apps typically provide temporary (24-hour) fax numbers; permanent numbers require upgrading to a paid plan.

eFax is not free, but it offers a 30-day free trial with full feature access. After the trial, standard plans begin at $12/month. This differs from apps like FaxBurner, which allow genuine free sending without trial limitations.

How can I send a fax via email?

Most fax apps for smartphones support email-to-fax forwarding. You attach your document to an email, address it to the recipient's fax number in the format provided by your fax service (e.g., 2015551234@faxburner.com), and send. The service converts the email into a fax and delivers it automatically. This method works from any email app without installing a dedicated fax app.

Does the iPhone have a built-in fax app?

No. iOS does not include a native fax application. iPhone users must download a third-party fax app for smartphones like FaxBurner, iFax, eFax, or access fax services through Safari or email-to-fax forwarding methods.

What is the best free fax app for iPhone?

FaxBurner is the best free fax app for iPhone, rated 4.8★ on the App Store. It allows one free fax with no credit card. For ongoing use, Fax.Plus offers a free tier, though with usage limits. Both support iOS fully.

Can I receive faxes on my smartphone with a fax app?

Yes. All top-rated fax apps for smartphones in this guide support receiving faxes. You get a dedicated fax number (permanent with paid plans, temporary with free tiers), and incoming faxes appear as PDFs in your app inbox or via email forwarding.

Are smartphone fax apps secure for sensitive documents?

Yes, reputable fax apps for smartphones use bank-grade or military-grade encryption. Look for apps certified as HIPAA-compliant, GLBA-compliant, or holding SOC 2 Type II certification. iFax, eFax, and Municorn all meet these standards for healthcare and legal document transmission.

Can I fax internationally using smartphone apps?

Yes. All major fax apps for smartphones support international faxing to 180+ countries. However, costs vary—international faxes may charge per-page or per-destination surcharges. Check your app's pricing for your target countries before sending high volumes abroad.

Do I need a permanent fax number or can I use temporary ones?

For occasional faxing, temporary numbers work fine (FaxBurner offers 24-hour numbers). For business or receiving ongoing faxes, invest in a permanent dedicated fax number available through paid plans. Permanent numbers cost $5–$50/month but enable reliable inbound fax reception.

What's the difference between send-only and full-featured fax apps?

Send-only fax apps for smartphones let you transmit documents but cannot receive faxes. Full-featured apps provide both sending and receiving, shared team numbers, detailed logs, and compliance reporting. Choose based on whether you need inbound fax capability.

Can multiple team members access the same fax number?

Yes. Enterprise and team-tier plans on eFax, iFax, Municorn, and Fax.Plus allow shared fax numbers with user permissions. Incoming faxes route to a shared inbox accessible by authorized team members, enabling collaborative workflows without duplicating numbers.

How long do fax apps store received faxes?

Storage retention varies by service: most store received faxes for 30–90 days on free/trial plans, and up to 1+ years on paid plans. For long-term archival, download and backup critical faxes to cloud storage (Google Drive, Dropbox) integrated into your fax app for smartphones.

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