iphone says cant send email because wrong address

Question

iphone says cant send email because wrong address

Maureen White 0

When I reply to an email on I phone it says cant send due to wrong address, even when I have just replied to an incoming email

0 comments

1 answer

Your answer

Answer 1

Jayden-P 605 Independent Advisor

Hi @Maureen White

Could you please confirm whether you are using Outlook for iOS on your iPhone or the native Apple Mail app?

Additionally, please provide the following information:

Does the issue occur when replying to all emails or only specific senders?
What is the exact error message you receive when the email fails to send?
Are you able to send a new email to the same recipient successfully?
Can you reply to the exact email in Outlook web?

If possible, please provide a screenshot of the error message. Before sharing it, kindly remove or redact any personal, sensitive, or confidential information such as email addresses, names, phone numbers, or company-specific details.

I look forward for your response.

Maureen White 0

it is I think on the native Apple app. message is Cannot send mail The sender address was invalid. unable to send any mail, whether as a reply or new email

Jayden-P 605 Reputation points Independent Advisor

2026-08-03T10:21:32.34+00:00

If so, you could try using Outlook for iOS and see if you can send emails there.

In your native Apple Mail, go to Settings > Mail > Account > Try remove the account then ad dit back.

If possible, can you clarify if you are using an Exchange account (Microsoft account) or IMAP account (another provider)?
Jayden-P 605 Reputation points Independent Advisor

2026-08-04T10:23:50.2766667+00:00

Could you please provide more information so I can assist you better?