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Email wont send - too many messages (2.3.6.3) error and outlook not working properly

loves2travel — Fri, 13 Jun 2025 09:06:27 GMT

I have had no issues using my BT email on outlook until a couple of days ago when incoming emails are taking ages to arrive and sent ones are going straight to the Drafts and eventually being sent.

If i go directly to BT email on the BT site i recieve emails straight away but i cant sent them and recieve the error

too many messages (2.3.6.3)

We have BT broadband

Please could i have suggestions on how to fix this as I need my email working correctly

Thanks in advance

Re: Email wont send - too many messages (2.3.6.3) error and outlook not working properly

Leanne_T — Sat, 14 Jun 2025 07:15:13 GMT

Morning @loves2travel

Thanks for coming to the community.

Are you sending the email to multiple contacts or just one?

Have you tried restarting the router?

Thanks 🙂

Leanne.

Re: Email wont send - too many messages (2.3.6.3) error and outlook not working properly

loves2travel — Sat, 14 Jun 2025 07:18:49 GMT

No only sending to one person at a time.

I'll try resetting the router and hope that works.

Thank you for replying

Re: Email wont send - too many messages (2.3.6.3) error and outlook not working properly

Leanne_T — Sat, 14 Jun 2025 10:20:13 GMT

Thanks for the quick reply @loves2travel

Let me know how you get on after trying this 🙂

Leanne.

Re: Email wont send - too many messages (2.3.6.3) error and outlook not working properly

loves2travel — Sat, 14 Jun 2025 17:06:23 GMT

Thank you it seems to have cured my BT webmail but not my Outlook unfortunately.

Any advice would be welcomed, its Office 365

Re: Email wont send - too many messages (2.3.6.3) error and outlook not working properly

Leanne_T — Sun, 15 Jun 2025 10:30:22 GMT

Hi there @loves2travel

Thanks for coming back to me.

Could you make sure the settings are correct as shown in the BT Email server settings help page.

If these are correct, could you deleting the app or if you're not using the app removing the email account from Outlook and setting this back up again.

Let me know if this helps.

Leanne.

Re: Email wont send - too many messages (2.3.6.3) error and outlook not working properly

loves2travel — Tue, 17 Jun 2025 19:08:49 GMT

I sent an error report to Outlook and they confirm they are having issues at the moment and mine is a known one.

I have to keep an eye on it to see if they manage a fix 😕 Meanwhile my BT webmail is working correctly

Re: Email wont send - too many messages (2.3.6.3) error and outlook not working properly

Leanne_T — Wed, 18 Jun 2025 07:23:58 GMT

Thanks for coming back to me with an update @loves2travel

I hope this is sorted soon for you.

Leanne 🙂