Daily use

Attachments that cannot be added, and full storage

Why a file might not attach to a reply, what the messages mean, and what to do when storage is full on your phone, your mailbox or a connected drive.

Last updated November 2, 2026

Most of the time an attachment fails for one of a few reasons: the file is too big, the channel does not take it, the upload did not finish, or your device or mailbox has no space left. This article explains each message and what to do.

Why can't I attach a file to my reply?#

The message under the reply box tells you which case it is:

This file is too large to attach. The file is over the limit for the channel, so it is not uploaded and nothing is sent. Remove the file, or send a link to it instead. See How big a file can I attach to a reply?.
{name} is large. It will be sent as a link, not attached. The file is big, so Twintual sends a link in its place. For a file from Google Drive, Twintual asks you to confirm first with Share this file as a link?, because anyone with the link can view it.
{Channel} does not accept this file. or This channel does not accept this file. That channel cannot carry this file, or cannot carry files at all, as with WhatsApp Business and Telegram. Use another channel or send a link.
The file could not be attached. The upload was refused. Select Try again. If it keeps happening, try a smaller file.
This file took too long to upload. Your connection was too slow or dropped. Check it and select Try again. See Offline and connection problems.
Waiting for the file to finish uploading. or Remove {name} to send. Wait for the upload to end, or remove the file, then send.
This file was blocked by antivirus scanning and cannot be attached. Twintual checks files for malware. Attach a clean copy, or do not send that file.
This file is too large to scan and cannot be attached. Send a smaller file or a link.

Nothing is sent while a file is stuck. Your text stays in the reply box.

What if my phone or computer storage is full?#

Twintual cannot attach a file your device cannot read or save. If your phone or computer is out of space, you may not be able to pick a file, take a photo or download an attachment. Free some space on the device, for example by deleting files or apps you no longer use, then try again. Nothing in Twintual is lost.

What if my mailbox or drive is full?#

If your email provider or drive has no space left, it may refuse to save a sent message with its attachments, or may bounce messages sent to you. Twintual then shows that the message could not be sent, and your reply is back in the box. Free space in the provider, for example by emptying its trash or deleting old large files, then send again. You manage that space in the provider, not in Twintual.

Does Twintual have a storage limit on my plan?#

Plans do not set a storage amount. They set how many profiles, channels per profile and sends per month you get. See Plan limits.

Why can't I open or download an attachment I received?#

Could not open this attachment. Try again. Check your connection and try again.
Downloading attachments from {channel} is not available yet. or Can't be shown here. Open it in {channel}. Open the message in that channel to see the file.
This file is too large to download here. or This image is too large to show here. Open it in the channel.
This file was blocked by antivirus scanning and cannot be downloaded. Do not open it.