We've recently changed our company name (more a variation of official name, but has the same effect). We want to change our Twitter handle to reflect this, the new handle is available and we can change it in the settings tab.
Before we do, so that there is no negative SEO/social implications, does anyone know whether Twitter will redirect tweets to our new handle if someone writes @oldname?
You can use the Favourite feature to mark the last tweet.
Favourite the last tweet first, then fetch the new tweets. Scroll down to the first favourite, unfavourite it, then start reading upwards.
I am not sure if the authors of the (un)favourited tweets are notified. You might be a little bit annoying in that case. :)
Unfortunately, selecting some text doesn’t work, because that’s cleared when you get new tweets.
This can't be done within the standard interface of Twitter. But any worthwhile Twitter client will probably have such a feature. For example, Tweetdeck -- which is now owned by Twitter and uses Twitter login. https://tweetdeck.twitter.com/
At the top of a Tweetdeck column, click "Settings" icon, then click "Clear" to remove all tweets. Next time, it will show only the new ones.
Best Answer
Twitter won't redirect tweets to your new handle if someone tweets to your old handle. Your old handle will be left for grabs so anyone will be able to use it.
I suggest you take possession of your old handle (simply sign up as a new user with a different email address) and note in the description what your new handle is (and why).
That way, even if someone mistakenly uses your old handle (which is unlikely) you'll be notified of it since you'll be in control of it and you'll be able to answer with your new handle then.
Also, if you forget you've left a link to your old Twitter handle somewhere on the web, people will still be able to find you.