How to Set Up Email for Your Business (2026)
Business inbox, transactional email, and deliverability. Three different problems that need three different solutions.
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Email is three separate problems
Most guides treat email as one thing. It is not. You need to solve three separate problems, and using the wrong tool for each one will cost you money, deliverability, or both.
Your business inbox (sending and receiving as you@yourdomain.com) is one problem. Transactional email (password resets, receipts, verification codes) is a second. Marketing email (newsletters, campaigns, announcements) is a third. This article covers the first two. Marketing email gets its own guide.
Business inbox: you@yourdomain.com
You need a professional email address on your domain. The options range from free to expensive, and the options have changed significantly in the last few years.
Google Workspace ($7/user/month) is the standard. Gmail interface, calendar, docs, the full suite. If you are a team of one, $7/month is fine. If you have 12 domains and want email on all of them, $7 per user per domain adds up fast.
Microsoft 365 ($6/user/month) is the alternative. Outlook, Teams, OneDrive. Some people prefer it. The pricing is similar to Google.
Hostinger email comes bundled with some hosting plans or available separately. Basic but functional. Worth considering if you are already on Hostinger for hosting.
Zoho Mail has a free tier (up to 5 users, one domain) and paid plans from $1/user/month. Functional webmail, calendar, and contacts. The free tier is genuinely useful for a single founder.
MXRoute is the option nobody talks about. One lifetime payment for unlimited mailboxes, unlimited domains, generous storage. It is run by a small team that takes their deliverability reputation seriously - they will ban you if you abuse it for marketing blasts. We use MXRoute across all our domains after two free email services changed to paid.
We used to get free email with every domain purchase. Gandi included it, Google Workspace used to offer it for small teams. Both went paid. If you have many domains, the per-domain costs add up quickly. MXRoute solved this for us with a one-time payment.
Transactional email: the emails your app sends
When a user signs up, resets their password, receives a receipt, or gets a notification - that is transactional email. It needs to arrive instantly and reliably. It is not optional.
Resend is our pick for new projects. Developer-first API, good deliverability, generous free tier (3,000 emails/month). Built by the team that created React Email. Clean, modern, does one thing well.
Postmark is arguably the most reliable for transactional email specifically. They separate transactional from marketing streams, which helps deliverability. Pricing starts at $15/month for 10,000 emails.
SendGrid (Twilio) has a free tier of 100 emails/day. It is older and more established but the developer experience is not as clean as Resend or Postmark. The pricing can get confusing at higher volumes.
The Amazon SES trap
Amazon SES is the cheapest option on paper - $0.10 per 1,000 emails. The catch: every new account starts in a sandbox where you can only send emails to verified addresses within your own domain.
To send to actual customers, you need to apply to leave the sandbox. We did everything right: configured SPF, DKIM, set up templates, tested deliverability. Applied to leave the sandbox. Got a generic denial with zero useful information about what to fix or when to reapply.
We had a working email system that could not email anyone outside our own team. Weeks of configuration, wasted. We moved to Resend and were sending real emails within an hour.
SES can work well once you are out of the sandbox, and the pricing is unbeatable at high volumes. But for a startup that needs to send verification emails today, the sandbox approval process is a real risk.
The self-hosted option
Mautic is the self-hosted email marketing and automation platform. Open source, runs on your own server, no per-email charges. We evaluated it alongside SES - the configuration works, the templates are decent, and it connects to various sending services.
The honest trade-off: Mautic handles the campaign logic but you still need a sending service (SES, SMTP relay, or your own mail server). Self-hosting the actual mail server is possible but maintaining deliverability reputation on your own IP is a full-time job. Most self-hosters use Mautic for the interface and a cheap SMTP relay for the actual sending.
For transactional email specifically, there is no practical self-hosted option that matches the reliability of Resend or Postmark. Email deliverability depends on IP reputation, and shared sending services have dedicated teams maintaining theirs.
SPF, DKIM, DMARC: set these up before your first email
These three DNS records determine whether your emails reach inboxes or spam folders. Every email provider will walk you through setting them up - it is usually part of the onboarding.
SPF (Sender Policy Framework) tells receiving servers which IP addresses are allowed to send email from your domain. DKIM (DomainKeys Identified Mail) adds a cryptographic signature to every email proving it came from you. DMARC (Domain-based Message Authentication, Reporting, and Conformance) tells receiving servers what to do with emails that fail SPF or DKIM checks.
The important thing: set these up before you send your first email. Your domain starts building a reputation from the first message. If your first batch of emails lands in spam because you skipped these records, that reputation is harder to recover than it is to build correctly from the start.
What to do right now
For your business inbox: if you have one domain, Zoho free tier or Google Workspace. If you have multiple domains and want to stop paying per-domain fees, look at MXRoute.
For transactional email: Resend for the best developer experience, Postmark for the best deliverability reputation. Either way, set up SPF, DKIM, and DMARC before your first send.
Do not start with Amazon SES unless you have time to wait for sandbox approval and are comfortable with the risk of denial.
Keep your business inbox and your transactional email on separate services. They have different deliverability requirements and mixing them causes problems.
Business inbox, transactional email, and marketing email are different tools for different jobs. Set up the first two before you launch. Marketing email can wait until you have an audience.
Frequently Asked Questions
You can use a personal Gmail address, but customers notice. A you@yourdomain.com address costs $7/month on Google Workspace and adds immediate credibility.
Transactional emails are triggered by user actions (signup verification, password reset, order receipt). Marketing emails are sent in bulk to a list (newsletters, announcements, promotions). They have different deliverability requirements and should use different sending services.
Yes. Without them, your emails are significantly more likely to land in spam. Most email providers walk you through setup during onboarding - it takes 15 minutes and protects your domain reputation from day one.
At high volumes (100,000+ emails/month), the pricing is unbeatable at $0.10 per 1,000 emails. For a startup sending hundreds of emails per month, the sandbox approval risk is not worth it when Resend costs nothing on the free tier.