S
SFirefox Relay vs SMSPVA
Pricing, features, platforms and who each one suits — side by side.
F
Choose Firefox Relay if…
- you want a free plan to start with
- you want open source you can self-host or audit
- you work on Chrome
- you're in its core audience: privacy-conscious individuals, firefox users
S
Choose SMSPVA if…
- you need an API to build on
- you're in its core audience: privacy-conscious individuals, developers and qa testers
Side by side
Feature Firefox Relay SMSPVA
Pricing modelFreemiumPaid
Starting price$0.99/mo—
Free plan
Free trial
API
Open source
PlatformsWeb, ChromeWeb, API
CategoryEmail & phone aliasesSMS verification services
CompanyMozillasince 2013
Full feature lists
F Firefox Relay
- Random email masks that forward to your real inbox
- Masked phone number that forwards calls and texts
- Removal of email trackers from forwarded mail
- Blocking of promotional emails while keeping receipts
- Personal mozmail.com subdomain for instant masks
- Anonymous replies to emails and texts
- Dashboard to label, create and block masks
- Browser extension for creating masks on any site
S SMSPVA
- One-time SMS activation numbers from 60+ countries
- Real SIM-based and VoIP numbers
- Long-term number rental for days, weeks or months
- Additional SMS request on the same number
- REST API with JSON responses and SMS callbacks
- Code examples for Python, PHP and Node.js
- Purchase without registration via email checkout
- Search and sort numbers by country and operator
Their home pages
What each vendor shows first: the pitch, the plans and the sign-up.
Firefox Relay · relay.firefox.com
What you'd pay
The cheapest plan that fits, per month, billed yearly where the plan offers it.
Firefox Relay
Limited email protectionFree
Email protection$1.99/mo or $0.99/mo billed yearly ($11.88/yr)
Email & phone protection$4.99/mo or $3.99/mo billed yearly ($47.88/yr)
Add VPN protection$6.99/mo billed yearly ($83.88/yr)
SMSPVA
One-time activationFrom $0.05 per number
Strengths and limitations
Firefox Relay
- Free tier includes 5 email masks and tracker removal
- Source code is public on GitHub
- Combines email and phone masking in one service
- Browser extension rated 4.1/5 from over 1,250 reviews
- Free plan is limited to 5 email masks
- Premium tiers are waitlist-only
- Premium is available only in certain countries
- Not recommended for identity-verified emails or ones that need attachments
SMSPVA
- Numbers start from $0.05
- Choice of real SIM or virtual numbers
- Can buy without registering
- REST API with code examples
- Payment methods have minimum top-up amounts
- Price varies by service and country, with no flat plans
More comparisons
Other options to consider
SS
Free, from $3/mo
S
Open-source email aliases to hide your real address and block spam
Email & phone aliasesFree planAPIOpen source
A
AOpen-source email aliases that forward to your inbox and hide your real address
Free, from $1/mo
A
Free, from $1/mo
A
Open-source email aliases that forward to your inbox and hide your real address
Email & phone aliasesFree planAPIOpen source
T
TT
Free, from $5/mo
T
Disposable temporary email addresses to avoid spam and protect your inbox
Temporary emailFree planAPI
G
GFree disposable email addresses to keep spam out of your real inbox
Free, from $0.83/mo
G
Free, from $0.83/mo
G
Free disposable email addresses to keep spam out of your real inbox
Temporary emailFree planAPIOpen source
1
11
Free
1
Free disposable email address that expires after 10 minutes, no signup
Temporary emailFree plan
5
5
Paid
5
Temporary virtual numbers for receiving SMS verification codes online
SMS verification servicesAPI
Facts from each vendor's public pages, prices checked Nov 8, 2026. Editorial policy