(note: make sure to fill in the template with fields mapped from your spreadsheet)
Template 1 — Initial outreach
Hey [first name name],
I was reading your post - [broken link source] - and I noticed you had a link pointing to [dead place]. This link is now dead and giving users a 404 error.
It would be awesome if you could replace that spot with [link] instead, if not, that is okay. We can provide the necessary content and image and we'll send it in a couple of days.
Thanks for reading my email and have a nice day
Cheers,
[sender]
Template 2 — Providing the broken link
Hey there!
Great to hear back from you. Here's a link you can replace that with [link].
Do you want me to provide any custom content for the page?
Cheers!
[Sender]