Gmail wasn't the first email service provider, but 20 years on from its launch, it's certainly one of the most popular ones out there today.
If you exclude the Apple email client, which dominates due to the prevalence of iOS, macOS and iPadOS devices, Gmail is number one across the world with a 31.2% share of users as of 2024, accoridng to Litmus. Its closest competitor, Microsoft's Outlook, only enjoys a little under 5% of all users, by comparison.
