Amazon KDP login for your whole team
without chasing one phone for codes
Amazon sends SMS login codes to one phone. Syfon routes that code to every team member instantly, via SMS, Slack, email, and more.
Get StartedHow It Works
The Amazon Publishing Bottleneck
Amazon Has No Team Login
KDP and ACX only allow one login per account. No team seats. No multi-user access. Everyone shares one set of credentials.
One Phone Holds Everyone Hostage
Amazon requires SMS 2FA. The code goes to one phone. Your editor, designer, and marketing lead all wait, or message that person every single time.
Launch Days Slip. Royalties Go Unchecked.
Need to upload a manuscript? Update pricing? Check royalty reports? If the code-holder is in a meeting, on holiday, or asleep, you're stuck.
Lose the Phone, Lose Access
If that one phone is lost, broken, or stolen, you'll lose access to your account until you can recover it or reset two-factor authentication with Amazon.
With Syfon: Every team member gets the login code the moment Amazon sends it. No waiting. No chasing. No bottleneck.
It's Easy to Set Up
No technical skills required. No software to install.
Get Your Syfon Number
Sign up and receive a dedicated phone number for your account.
Set It as Your Amazon 2FA Number
Update the phone number in your Amazon account's two-step verification settings.
Your Whole Team Gets the Code
Choose where codes go: SMS, email, Slack, or all of them at once. Everyone logs in without waiting.
Deliver Codes Anywhere
Send 2FA codes to your team wherever they work.
Multiple Phones
Forward to unlimited phone numbers.
Slack
Direct messages or channels.
Google Chat
Spaces and direct messages.
Any email address or distribution list.
Everything You Need
Powerful features designed specifically for publishing teams.
Instant Delivery
Codes arrive in seconds, not minutes. Your team stays productive.
Unlimited Team Members
Add as many team members as you need. No per-user fees.
24/7 Availability
Works around the clock, even when you're asleep or on vacation.
Smart Notifications
Choose how and where you receive codes. Customise per team member.
Code History
Search and review past codes. Messages are kept for 14 days.
Works Globally
Support for international phone numbers and time zones.
Not Just Amazon
Syfon works with any platform that sends SMS verification codes.
Shared SaaS Accounts
Any tool that forces SMS 2FA on a single login, including social media, analytics, and ad platforms.
Agency & Client Logins
Manage client accounts without chasing them for codes every time you need to log in.
Remote & Global Teams
Team across time zones? Nobody waits for the person with the phone to wake up.
Security You Can Trust
Your data stays protected. We route messages, not usernames and passwords.
We Never See Your Credentials
Syfon only receives and forwards SMS codes. Your username and password are never shared with, seen by, or stored by Syfon.
You Control Access
Only your configured team members receive notifications. Add or remove destinations at any time.
Delivery Log
See where every code was forwarded and when it was delivered.
Simple, Transparent Pricing
One plan. Everything included. No surprises.
- Dedicated phone number
- Unlimited messages to Slack, Google Chat & email
- Optional SMS forwarding at additional cost
- Unlimited team members
- Code history & delivery log
- Cancel anytime
FAQ: Common Questions
Is this safe to use with my Amazon account?
Yes. Syfon simply receives the SMS that Amazon sends and forwards it to your team. It does not interact with your Amazon account in any way. Your Amazon username and password are never shared with or stored by Syfon.
How fast do codes arrive?
Codes are forwarded in seconds, fast enough to use before they expire.
Does Syfon only work with Amazon?
No. Syfon works with any platform that sends SMS verification codes, including social media accounts, ad platforms, banking, SaaS tools, and more. Amazon KDP and ACX are just our primary focus because the problem is especially painful for publishing teams.
How much does it cost?
Syfon is $29 USD per month. This includes your dedicated phone number and unlimited messages to Slack, Google Chat, and email. SMS forwarding is available at additional cost, but you can avoid it entirely by routing codes to Slack, Google Chat, or email instead.
How long does setup take?
Once you sign up, we carry out some manual checks to ensure that the service is not being used for spam purposes. Usually your number is available the same day. After that, just update your SMS number at Amazon settings and log in to your Syfon account to choose where to route codes.
Is there a free trial?
Unfortunately, we can't offer a free trial as the phone number incurs a monthly rental fee. But you can try Syfon for one month and cancel at any time. No lock-in.
Stop chasing colleagues for login codes
Give your entire publishing team instant access to Amazon KDP and ACX without sharing phones.
Get StartedNo long-term contract. Cancel anytime.