Why are my Gmail emails queued or delayed?

Last reviewed: October 3, 2026 · Markdown version

"Queued" means the Gmail app is still holding the message, and Google treats that as a sync problem. Its Android troubleshooter lists "You can’t send messages." first among the common sync issues it fixes (Fix sync errors with the Gmail app (Android), read 3 October 2026). Neither that page nor Google's page on delayed mail uses the word "Queued" or mentions an Outbox (An email I sent was delayed or didn't arrive, read 3 October 2026), so the first sentence here is our reading of the app's label; everything below is from Google's pages.

Stuck on your phone

The connection. Google: "Make sure you’re connected to Wi-Fi or mobile data. If you're on a slow connection, it could take a while for your email to send." (the delayed or didn't arrive page above).
Your Google storage. When the account is full, the troubleshooter says, "You can’t send or receive messages." It is the cause nobody suspects for an outgoing problem; Gmail storage full shows how to check.
The phone's own storage. "If your device is low on storage space, the Gmail app doesn't sync." (the Fix sync errors page above).
A big file attached? Then rule out the attachment itself; attachments that keep failing covers Gmail's size and upload errors.
The general sync checks (refresh, update, restart, sync settings) are on Gmail not syncing.

Be careful with the last resort on Google's list, clearing the Gmail app's storage. Google says to "Only proceed with these steps if the other troubleshooting steps fail", because they can erase your message drafts, signature and settings. The page does not say what happens to a message waiting to send (the Fix sync errors page above), so copy the text of anything important somewhere safe before you try it.

Sent, but slow to arrive

If the message is in Sent, Gmail has handed it over and the delay is further down the line. Google's checklist (the delayed or didn't arrive page above):

"Check your Sent Mail and Drafts. If the email isn't there, you might have deleted it before you sent it."
Ask the recipient to look in Junk or Spam, and to add you to their contacts if it is there.
"Wait a few hours to see if you get a delivery error message."
If you sent it from Apple Mail, Outlook or another program, "try sending it from mail.google.com or the Gmail app instead."

If none of that helps, Google's last step points away from you: the recipient should ask their own email provider "if there are problems getting emails from Gmail."

When a limit is holding you back

Bulk sending trips Gmail's daily ceiling. Google's limits page says the "You have reached a limit for sending mail" message can follow mail to more than 500 recipients in one email or more than 500 emails in a day, and "you should be able to send emails again within 1 to 24 hours." A recipient can be the bottleneck too: "The user you are trying to contact is receiving mail at a rate that prevents additional messages from being delivered." (Limits for sending & getting mail, read 3 October 2026). The numbers in full are on how many emails Gmail lets you send.