SMTP
REST API
Webhooks
SMTP & API
Connect in minutes with an SMTP relay or a simple REST API, and get delivery events through webhooks.
Plans from $15/monthUnlimited emails
Send unlimited emails from your own domains over SMTP or API. Plans start at $15 a month, with no per-email fees.
Order receipt
Delivered
Password reset
Delivered
Welcome email
Delivered
Unlimited emails
Receipts, password resets, alerts. Send as many as you need with no per-email charges on any plan.
SPF
Authorised senders
DKIM
Signed messages
DMARC
Policy published
Verified domains
Authenticate every domain with SPF, DKIM and DMARC so your mail is trusted by inboxes.
Pricing
Simple pricing. Unlimited emails.
Pick the plan that fits your domains. Every plan includes unlimited transactional email.
Starter
3 domains$15/month
Perfect for side projects and early testing.
- 3 sending domains
- Unlimited emails
- No daily email limit
- SMTP relay & REST API
- Webhook endpoints
- Full delivery & activity logs
- SPF, DKIM & DMARC support
Pro
10 domains$20/month
For growing SaaS apps and startups.
- 10 sending domains
- Unlimited emails
- No daily email limit
- SMTP relay & REST API
- Webhook endpoints
- Full delivery & activity logs
- SPF, DKIM & DMARC support
Scale
Unlimited Addon$90/month
High-volume transactional email delivery.
- Unlimited sending domains
- Dedicated IP included
- Priority deliverability support
- Unlimited emails
- No daily email limit
- SMTP relay & REST API
- Webhook endpoints
- Full delivery & activity logs
- SPF, DKIM & DMARC support
Not just another SMTP relay. A sender with a commitment to the inbox.
Start sendingEmails sent today 12,408
12,731
13,096
12,731
13,096
Every transactional email
Receipts, resets and welcomes, sent without per-email fees.
99.9% Uptime<1s DeliveryInbox placed
Reliable delivery
Webhook events confirm every message landed.
Fits your stack
SMTP, REST API and webhooks, all with TLS.
shop.com · DNS records
SPFVerified
DKIMVerified
DMARCActive
Verified domains
SPF, DKIM and DMARC for every sending domain.
Fast, dedicated sending
Add a dedicated IP and own your sender reputation.
Start sending in three steps
No long setup. Add a domain, verify it and send.
Step 1
Add your domain
Tell us which domain you want to send from.
Step 2
Verify DNS records
Add the SPF, DKIM and DMARC records to your DNS.
Step 3
Send by SMTP or API
Plug in your credentials and send your first email.
Trusted by fast-moving teams and indie builders
Testimonials
Loved by developers
Teams switch to MailFlash for the price and stay for the deliverability.
“We cut our email bill by more than half and never had to think about per-email limits again. Setup took ten minutes.”
Aisha Rahman
CTO, Cartly
“Our receipts and password resets land in the inbox every time. The dedicated IP gave us full control of our reputation.”
Daniel Kim
Founder, Shipfast
“The SMTP relay dropped straight into our stack and the API is clean. Simple, fast and honestly priced.”
Sofia Martins
Lead Engineer, Northwind
Questions, answered
What is transactional email?
Messages your product sends automatically to one person because of something they did: order receipts, password resets, sign-up confirmations and account alerts.
Can I send marketing emails?
No. MailFlash is strictly built and optimized for transactional email only. To safeguard inbox placement for all senders, our automated inspection engine monitors outbound streams in real time. The system automatically detects marketing or bulk patterns—such as mass recipient clustering, campaign velocity spikes, promotional content, and elevated bounce signals—and immediately blocks them before they can affect domain or IP reputation.
Why would I want a dedicated IP?
With a dedicated IP, your sending reputation belongs only to you. Other senders can't affect it, which gives you more control over how inboxes treat your mail.
How do I send emails?
Add and verify your domain, then send through the SMTP relay or the REST API using your credentials.
MailFlash
Replies in a few minutes
Today
Hi there 👋 I’m the MailFlash support team. How can we help with your sending today?
Powered by MailFlash