Don't be too formal

"Yours sincerely" is widely seen as too formal. If you feel like you sound like a Jane Austen character, delete and start over. The PerkBox survey ranked these three formal endings — "yours truly," "yours faithfully", and "sincerely"— among the worst email sign-off options.

What can I say instead of sincerely?

Alternatives to "Sincerely" and when to use them

Is it professional to say sincerely?

As any job recruiter would tell you, the standard way to end any letter is with "sincerely." And don't get us wrong, sincerely is a perfectly acceptable sign off for an email – but it's also unoriginal and overused.