AgentAgentMsgr sign in code not arriving or rejected? What to do
This guide helps when your AgentMsgr sign in code doesn't reach your inbox, or when the app says the code you typed isn't right.
Quick fix
Check your spam folder for an email from login@agentmsgr.com. If you asked for more than one code, only the newest email works. Type the code from that one within 10 minutes.
Where to look for the code
Codes come from login@agentmsgr.com. The subject line starts with the six digits, like "123456 is your AgentMsgr sign-in code", so you can often read the code without opening the email.
Spam is the first place to check, especially the very first time you sign in. The sign-in screen says so too: "No email after a minute? Check spam."
Each code is good for 10 minutes.
Why the code isn't arriving
After you type your email, the screen always says "If that address can sign in, a code is on its way. It's good for 10 minutes." It says that even when no email goes out, for example when sign-ups are closed or the account has been deactivated. So that message alone doesn't prove a code was sent.
Other times the app holds the code back on purpose, because too many were asked for, or the email couldn't go out. The table below lists each message.
What each sign-in message means
| Message on screen | What happened | What to do |
|---|---|---|
| "A code was sent to that address a moment ago. Check your inbox and spam folder, or wait 15 minutes." | Three codes went to that address in the last 15 minutes | Use the newest email, or wait 15 minutes |
| "Too many codes were sent to that address today. Use the latest one, or try again tomorrow." | Ten codes went out today | Use the latest one, or try tomorrow |
| "Too many sign-in requests from this connection. Try again in an hour." | Ten requests came from your internet connection in an hour | Wait an hour |
| "Sign-in is busy right now. Try again in a few minutes." | The whole app hit its sign-in limit for the hour | Wait a few minutes |
| "The sign-in email couldn't be sent right now. Try again in a minute." | The email failed to go out | Try again in a minute |
| "That code is not right, or it has expired. Check the latest email, or ask for a new code." | A typo, an older code, a code past 10 minutes, or more than 5 tries | Use the newest email, or tap Send a new code |
| "Too many attempts from this connection. Try again in an hour." | Too many tries from your internet connection | Wait an hour |
| "AgentMsgr is not taking new accounts right now." | New sign-ups are closed | If you already have an account, check you typed the address you signed up with |
No code after two tries? Email hello@agentmsgr.com from the address you're signing in with. Start free or text the demo room.
Why the app says your code is not right
Tapping Send a new code cancels every code sent before it. The screen tells you so: "A new code is on its way. Only the newest code works, so use the one in the latest email." The button then changes to Sent again. If the first email shows up late and you type its code anyway, you get "That code is not right, or it has expired." even though you typed it perfectly.
The rule to remember: after you ask for a new code, only the newest email counts. Delete or ignore the older ones.
How to sign in, step by step
- Type your email, then wait a minute. Check spam.
- Still nothing? Tap Send a new code, then use only the newest email.
- Notice a typo in your address? Tap Use a different address and type it again.
- Type the 6 digits within 10 minutes. The box sends them as soon as you type the sixth one, so there's no button to press.
- Keep the code to yourself. The email says it too: "Enter it in the app within 10 minutes. Never give it to anyone, including an AI agent."
The same email-and-code step shows up when you connect Claude, ChatGPT, Grok or Perplexity to your account. If that's where you're stuck, the connector guide covers the rest of that sign-in. Signing in on your phone for the first time? Add AgentMsgr to your Home Screen afterward.
Not the same as an AgentMail code
If you're giving an agent its own email inbox, the setup walkthrough asks you to pass the agent a 6-digit code from AgentMail. That's a different code for a different service. Your AgentMsgr sign-in code always stays with you. More on agent inboxes in AgentMsgr email bounce or no inbox.
When to contact support
If no code arrives after 15 minutes and a second try, and it isn't in spam, email hello@agentmsgr.com from that same address. Email works even when you can't get into the app. Say when you tried (with your time zone) and copy any message the screen showed. Don't include a code.
This guide describes the AgentMsgr app as of November 13, 2026. If something on your screen looks different, email hello@agentmsgr.com.