Addy.io
Open-source email aliases that forward to your inbox and hide your real address
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Pricing
Free · from $1/mo
API
Yes
Open source
Yes
Company
addy.io
Platforms
What is Addy.io?
Addy.io is an anonymous email forwarding service. You give each website its own alias, and mail sent to it is forwarded to the inbox you already use. You pick a username and get your own subdomain (for example johndoe.anonaddy.com). Any address on that subdomain works on the spot, and you can switch an alias off in one click when it starts getting spam.
Paid plans let you reply and send from aliases, bring your own domains, forward to several inboxes and strip tracking pixels. Other features include GPG/OpenPGP encryption of forwarded mail, rules, a blocklist, labels, webhooks and a developer API. There are apps for iOS and Android, extensions for Chrome and Firefox, and Bitwarden integration.
The free plan includes unlimited standard aliases, and paid plans start at $1/month. Addy.io is open source and can be self-hosted. It is run by an independent developer in the UK, and it suits privacy-minded people who want to limit spam and tracking from data breaches.
Key features
- Unlimited aliases on your own username subdomain
- Anonymous replies and sends from aliases
- Custom domain support
- GPG/OpenPGP encryption of forwarded mail
- Tracking pixel removal
- Rules, blocklist and labels
- Developer API and webhooks
- Bitwarden alias generator integration
Use cases
Who it's for
Signing up for online shops
Give each store its own alias so a breach only exposes that one address.
Finding who sold your address
Spam arrives at a site-specific alias, so you can see the source and switch that alias off.
Replying without revealing your inbox
On Lite and Pro you can reply from the alias, and your real address stays hidden.
Self-hosting email aliases
Run the open-source code on your own server with your own domains.
Addy.io pricing
From the vendor's site, checked Nov 8, 2026. Prices change — confirm on their pricing page.
| Plan | Free | Lite | Pro | Duo | Family |
|---|---|---|---|---|---|
| Paid monthly | Free | yearly only | $4/mo | $6/mofor 2 members | $10/mofor 5 members |
| Paid yearly | Free | $1/mo | $3/mo−25% | $4.50/mo−25% | $7.50/mo−25% |
| Shared domain aliases | 10 active | Unlimited | Unlimited | Unlimited | Unlimited |
| Recipients | 1 | 5 | 30 | 30 | 30 |
| Custom domains | — | 1 | 20 | 20 | 20 |
| Replies/sends a day | — | 50 | 200 | 200 | 200 |
| Bandwidth | 10MB a month | 100MB | Unlimited | Unlimited | Unlimited |
| Members | — | — | — | 2 | 5 |
| Also |
|
| — |
|
|
| Cost for a team, per month | 1 person | 5 people | 20 people |
|---|---|---|---|
| Liteflat, up to 1 | $1 | — | — |
| Proflat, up to 1 | $3 | — | — |
| Duoflat, up to 2 | $4.50 | — | — |
| Familyflat, up to 5 | $7.50 | $7.50 | — |
Billed yearly where the plan offers it. — means the plan doesn't allow that many people.
Which plan do you need?
- Guerrilla MailCustom domain$0.83/mo
- Firefox RelayEmail protection$0.99/mo
- Addy.ioLite$1/mo
- SimpleLoginPremium$3/mo
The cheapest paid plan with a published price that fits. Custom and sales-quoted plans aren't included.
Get an email when Addy.io changes its prices
One mail per change, a stop link in each. Nothing else.
Addy.io in numbers
- Free aliases
- Unlimited standard + 10 shared domain
- Cheapest paid plan
- $1
- Aliases on paid plan
- Unlimited standard + 50 shared domain
- Phone numbers
- 0
- Custom domains
- Yes
- Reply from alias
- Yes
- PGP encryption
- Yes
- Open source
- Yes
- Apps & extensions
- Chrome, Firefox, Edge, Safari, iOS, Android, web
- Jurisdiction
- UK (England and Wales law)
The cheapest paid plan (Lite, $1/month) is sold yearly only, Pro costs $4 month-to-month, and replying from an alias requires a paid plan. From Addy.io's own pages, checked Nov 8, 2026. Each figure links to the page it is from; fields the vendor doesn't state are left out.
How Addy.io compares
- Addy.io has the best cheapest paid plan of the 3 services here: $1.
- Addy.io has the weakest phone numbers of the 3 services here: 0.
| Tool | Free aliases | Cheapest paid plan | Phone numbers | Reply from alias | Custom domains | |
|---|---|---|---|---|---|---|
| AAddy.io | Unlimited standard + 10 shared domain | $1 | 0 | Yes | Yes | |
S SimpleLogin | 10 | $4 | 0 | Yes | Yes | Addy.io vs SimpleLogin |
F Firefox Relay | 5 | $1.99 | 1 | Yes | No | Addy.io vs Firefox Relay |
G Guerrilla Mail | — | — | — | — | Yes | Addy.io vs Guerrilla Mail |
T Temp-Mail | — | — | — | — | Yes | Addy.io vs Temp-Mail |
Figures from each vendor's own pages; — means the vendor doesn't state it. The closest alternatives in our directory by category. “Starts at” is the cheapest paid plan per month, as each vendor lists it.
Pros and cons
Strengths
- Free plan includes unlimited standard aliases
- Paid plans start at $1/month
- Open source, self-hostable and audited by Securitum
- Accepts card, PayPal, crypto and vouchers
Limitations
- Replying from aliases requires a paid plan
- Free plan limited to 10MB of forwarded mail a month and 1 recipient
- Some sites block alias-service domains
Addy.io FAQ
Is Addy.io free?
Yes. The free plan includes unlimited standard aliases with no time limit. Paid plans start at $1/month billed yearly.
Do I need to change email provider?
No. It forwards to your existing inbox, such as Gmail, Outlook or Proton.
Does Addy.io store my emails?
No. Emails are forwarded and not stored, unless you turn on storing failed deliveries. You can also add GPG encryption.
Which payment methods are accepted?
Card or PayPal, cryptocurrency for yearly plans, in-app purchases on iOS and Android, and voucher codes.
Can I self-host it?
Yes. It is open source and has a self-hosting guide.
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Addy.io
Free · from $1/mo
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