Returned Email for TOO MANY EMAIL RECIPIENTS?

Send or unsend Gmail messages
You can send or unsend messages from a browser or the Gmail app.
Computer AndroidiPhone & iPad
Write an email
On your computer, go to Gmail.
In the top left, click Compose Compose.
In the "To" field, add recipients. If you want, you can also add recipients in the "Cc" and "Bcc" fields.
Add a subject.
Write your message.
At the bottom of the page, click Send.
Send messages with confidential mode
Note: If you're using Gmail with a work or school account, contact your admin to make sure you can use confidential mode.
On your computer, go to Gmail.
Click Compose.
In the bottom right of the window, click Turn on confidential mode Turn on confidential mode.
Tip: If you've already turned on confidential mode for an email, go to the bottom of the email, then click Edit.
Set an expiration date and passcode. These settings impact both the message text and any attachments.
If you choose "No SMS passcode," recipients using the Gmail app will be able to open it directly. Recipients who don't use Gmail will get emailed a passcode.
If you choose "SMS passcode," recipients will get a passcode by text message. Make sure you enter the recipient's phone number, not your own.
Click Save.
Recall an email with Undo Send
If you decide you don't want to send an email, you have a short time after to cancel it. Right after you send a message, you can retract it:
In the bottom left, you'll see "Message sent" and the option to "Undo" or "View message".
Click Undo.
Choose an amount of time to recall a message
On your computer, go to Gmail.
In the top right, click Settings Settingsand then Settings.
Next to "Undo Send," select a Send cancellation period of 5, 10, 20, or 30 seconds.
reference: https://support.google.com/mail/answer/2819488?co=GENIE.Platform%3DDesktop&hl=en

Have you tried to copy the received email of the old email address and paste to your new recipient, if you are concerned about hackers and you are sending a email/s to multiple recipients use BCC (Blind Carbon Copy) and request your recipients do the same.
Hope this helps you.

there could be a bunch of reasons why the message was not received.

- the email server that received the message has not yet forwarded the email to the recipient.
- if the there is an error in sending email from your email to email server of the recipient you should be able to receive a confirmation that there was an error.
- the recipient might not properly configure the their email client
- you've sent the email to a different address
- your email server has not yet forwarded the email to the email server of the recipient

As far as the usage of auxiliary verb + receive is concerned, the first is correct, the others are wrong; the second is particularly ungrammatical. The third has "to receive" in the wrong tense, it should be the infinitive: "receive". When you use the auxiliary verb "do" + verb, the verb is always in the bare infinitive, it is the "do" that changes for tense (did = past).

"I don't have [x]" means that x (a noun phrase) is not in your possession, X cannot be a verb. "I don't have any money", but not "I don't have [done something]".

Go to the Sent folder in AIM Mail or AOL Mail.
Make sure the box in front of the message you want to unsend is checked.

• You can also check multiple messages to take them all back at once,

Click the Unsend button.
Click Unsend again.


Note that you can (effectively) unsend an email only if:

The message was sent to AOL recipients only.
You cannot take back an email if it also has been delivered to internet recipients, not even from AOL recipients.
You sent the message from AOL itself, not from an email client using IMAP and SMTP to access an AOL email account.
The message has not yet been read by any recipient.

Cc stands for carbon copy which means that whose address appears after the Cc: header would receive a copy of the message. Also, the Cc header would also appear inside the header of the received message. Bcc stands for blind carbon copy which is similar to that of Cc except that the Email address of the recipients specified in this field do not appear in the received message header and the recipients in the To or Cc fields will not know that a copy sent to these address.

the error message means that the person or persons you are sending the mail to have problems with their mails so try sending it batch by batch or use a mass email sender software

you must have email account, also the POP address, and the SMTP with your username and password ready

Set up email account
1. Select Menu > Messaging > Email > Settings > New account > Add.
2. Enter a name for the email account, for example, Home or Office. Select OK.
3. Select Connect using > Edit and select the data account you created earlier to use with this email
account.
4. Select Email address > Edit. Enter your email address. Select OK.
5. Select Connection type > Edit. Select POP3 or IMAP4. POP3 is the most common.
6. Select Incoming server > Edit. Enter the name or the IP address for the incoming server. Select OK.
7. Select Username > Edit. Enter the incoming server username. Select OK.
8. Select Password > Edit. Enter the incoming server password and select OK. Leave this blank if you
want to be asked for the password each time you check new mail.
9. Select Outgoing server > Edit. Enter the name or the IP address of the SMTP server you use to send
email messages. Select OK.
10. Select Advanced settings.
11. Select Your name (not mandatory) > Edit. Enter your name and select OK. This will appear in outgoing
email messages.
12. Select Signature (not mandatory) > Edit. Create a signature to add to your email messages and
select OK.
13. Select Download S&R. Choose what to download when receiving new email messages:
• Subjects only – receive information such as sender and subject before downloading the whole email.
• Up to size limit – receive the whole email. Select Size limit to set the maximum size to download
when receiving new email messages.
• Subjects & text – Only for IMAP4 users. Receive the subject and text but not attached files.
14. Select Check interval (not mandatory). Choose how often you want the phone to connect to your
email server and check for incoming email messages.
15. Select Push email. Only for IMAP4 users. Select On for full email notification functionality or Off to
disable the functionality. See Using push email for full email notification functionality on page 7.
16. Select Allow connection > Edit. Select Any network or Home network.
17. Select Copy outgoing (not mandatory) > Edit. Select On if you want email messages sent from your
phone to be sent to an additional email address of your choice. This way your sent messages are
copied and can be saved for future reference.
18. Select Encryption > Edit. Choose whether your email messages should be encrypted.
19. Select Outgoing. username. If requested, select Edit enter the outgoing server username.
20. Select Outgoing. password. If requested, select Edit enter the outgoing server password.
21. Select Incoming port. If needed, change the port for the protocol you are using.
22. Select Outgoing port. If needed, change the port for the SMTP protocol.

and the other is

To write and send an email message
1. Select Menu > Messaging > Email > Write new.
2. Select To: to add recipients and select Add. There are three ways to add an intro sentence:
• Select Enter email address. to enter an email address.
• Select Contacts look-up to retrieve a recipient from Contacts.
• Select an email address from the last used recipients.
3. To add more recipients, select To: > Edit select Cc or Bcc and select recipients to add. When finished
selecting recipients select Done.
4. Select Subject: to write the subject.
5. Select Text: to write the text.
6. Select Attachments: and select the attachment to add. Add more attachments the same way.
7. Select Continue.
8. Select Send to send the message or More to view options.
To receive and read email messages
1. Select Menu > Messaging > Email > Inbox.
• Select Send&rec when the inbox is empty or
• Select More > Send & receive to download new messages.
2. Select a message and select View to read it.
To reply to an email message
1. Select Menu > Messaging > Email > Inbox. Select an email message in the inbox. Select More
> Reply and select:
• Yes – to include the original message in your reply or
• No – to exclude the original message.
2. Write your message select OK > Continue.
3. Select Send to send the message or More to view option

It means that you wrong addressed email or this email no longer egsist