Hi Jthrose,
welcome to the Apple (user-to-0user) Community!
Re: cant get rid of a signature on email !
Wondering if you are using iCloud Mail ?
If so: You can stop using a signature on any new emails you send.
- In Mail on iCloud.com, click
at the top of the Mailboxes list, then choose Settings. - Click Composing, then deselect “Add a signature.”
More info: Create an email signature in Mail on iCloud.com - Apple Support
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Else: To check the email signature on iPhone, (or maybe leave the signature field blank):
Customize your email signature
You can customize the email signature that appears automatically at the bottom of every email you send.
- Go to Settings
> Mail, then tap Signature (below Composing). - Tap the text field, then edit your signature.
- You can only use text in your Mail signatures.
Tip: If you have more than one email account, tap Per Account to set a different signature for each account.
More info: Change email settings in Mail on iPhone - Apple Support
All the best :-)