# Which mailer should I use?

> Answer four questions about your email and your site, and see which BooleanSMTP mailers fit best — with the reason for each.

BooleanSMTP sends through five mailers. Most sites fit one of three situations:

- **Your business email is on Google Workspace or Microsoft 365.** Send through that account: you connect by signing in.
- **Your site sends a lot** — shop orders, memberships, newsletters. Use Amazon SES, a sending service built for volume.
- **Your host or mailbox gives you SMTP details.** Use **Custom SMTP**.

**PHP Mail** is WordPress's default sending, with no provider behind it — a last resort rather than a choice.

## Find your fit

Pick an answer to each question; the list re-orders as you go, and the top three say why.

<MailerChooser questions={questions} cards={cards} />

Each card opens that mailer's setup guide. The full list is on [Mailers](/mailers/).

<CheckYourself
	page="choose-a-mailer"
	questions={[
		{
			question: 'Which mailers send over an API in BooleanSMTP?',
			answers: [
				{ label: 'Every mailer', explain: 'Custom SMTP sends over SMTP, and PHP Mail through WordPress itself.' },
				{ label: 'Amazon SES, Google Workspace and Microsoft Outlook', correct: true, explain: 'Those three send over their API; every other mailer sends over SMTP.' },
				{ label: 'Only Amazon SES', explain: 'Google Workspace and Microsoft Outlook connect by signing in and send over their API too.' },
			],
		},
		{
			question: 'Your email is on Microsoft 365. Which mailer fits?',
			answers: [
				{ label: 'Microsoft Outlook', correct: true, explain: 'It sends through your Microsoft 365 account over the Microsoft Graph API.' },
				{ label: 'PHP Mail', explain: 'PHP Mail sends from your web server with no provider behind it.' },
			],
		},
	]}
/>