Iphone 4s sending texts as emails

[Anonymous]

Hi - first time here and I hopes somebody can help. 

I have an Iphone 4s.  Up until recently it worked fine but recently if I send somebody a text message most people receive it as an email sent from my phone number.
 
It has my phone number as the sender and the receiver gets an email from me saying something like "you have received a picture message" from and my phone number.
 
Can anybody advsise what I need to do to fix ths please.
 
I have researched this on the net but nothing I've done so far seems to make it work.
 
Thanks for your help

[jonsie]

In the SMS/MMS settings make sure the Show Subject Field is off.

[Anonymous]

Hi thanks for the speedy reply.  Yes it is off already. 

[jonsie]

It sounds as though their email accounts are somehow linked in your contacts. Try removing the email address, you can always add it back again.

[Anonymous]

Thanks for the reply - but I cant really do that (without a lot of work) as this happens with lots of my contacts - not just the one contact. 

[jonsie]

Meant just one contact:smileywink:

[Anonymous]

Thanks for the reply but I cant see what that will prove.

Some of my contacts have email addresses and some dont. 

The problem is random in that some text messages will get through as text messages and some will get through as emails - them having/not having an email address in my phone doesnt appear to have any bearing on how they receive the message.

Very strange - but keep thinking!  im grateful for your help.

[Anonymous]

Are you using iMessage as that used to happen to me. I unchecked my devices & deactivated iMessage & it hasn't happened since

[Anonymous]

Yes I am using iMessage.

I will give that a go... shame though as iMessage was useful....

Thank you

[Anonymous]

no problem, i found it useful until this happened to me then most of my imessages werent being delivered so i just use sms now