Work through these checks in order — most cases are resolved by the first two or three.
1. Check your spam or junk folder
This is the most common cause. Forwarded emails sometimes get flagged by your email provider's spam filter because they come from a different sending server than usual. Check spam first before digging further.
If you find the email there, mark it as "Not Spam". Over time your provider learns to trust the source.
2. Check the alias is active
Go to Aliases and find the alias in question. Is the toggle green (active)? If it's grey, the alias is off and emails are bouncing back to senders. Toggle it on.
3. Check the destination is verified
Go to Destinations. If the destination the alias forwards to shows as unverified, emails won't be delivered. Verify it — see Verifying a destination.
4. Check the alias is forwarding to the right destination
Open the alias detail page and confirm which destination it's assigned to. If you have multiple destinations, make sure it's pointing to the inbox you're actually checking.
5. Check for a sending delay
Email delivery isn't always instant. Busy sending servers or temporary delays at your email provider can hold emails up for several minutes. If you just sent a test email, wait five minutes before assuming something is broken.
6. Check your inbox isn't full
Some email providers stop accepting mail when the mailbox is over quota. Check your storage and free up space if needed.
7. The sender may have a delivery issue
If emails from a specific sender aren't arriving but others are, the problem may be on the sender's side — their server might be rate-limited, misconfigured, or on a blocklist. Ask the sender to check if their email actually sent.
Still not working?
If you've gone through all of the above and emails still aren't arriving, open a support ticket and include:
- The alias address
- The destination it forwards to
- When the problem started
- What you've already checked