Collection
Sending Email
The reference for the send itself. Endpoints and parameters, SMTP ports and credentials, attachments, templates, custom headers, scheduling, and how rate limits behave.
Articles in Sending Email
- 2 min read
What kind of emails can I send with Maileroo?
Maileroo supports transactional emails triggered by user actions or system events, plus marketing emails via SMTP. You must disclose both email types during verification. Marketing messages require explicit opt-in consent, a working unsubscribe link, and compliance with email policies.
Patrick Yammouni
- 3 min read
How to use the applications sending feature?
Maileroo Applications create separate email-sending environments for projects, tenants, or clients. Configure authorized domains, sender and recipient allowlists, IP restrictions, and outbound routing, then use unique SMTP or API credentials and filtered logs to monitor each application.
Patrick Yammouni - 2 min read
I have multiple clients and want to host email delivery for them
Maileroo lets you add unlimited client domains, configure DNS, monitor each domain separately, and use a unique sending key for each. All domains share one monthly quota, and policy violations by one client can affect the entire account, so carefully monitor outbound email compliance.
Patrick Yammouni - 2 min read
How can I use my domain for click and open tracking?
Set up click and open tracking with your own domain in Maileroo to support brand consistency, deliverability and analytics. Select your domain, open its DNS Records, add the required CNAME in your DNS manager, then verify it. Maileroo enables tracking and provisions SSL automatically.
Patrick Yammouni - 1 min read
Can I send marketing or newsletter emails with Maileroo?
Maileroo supports transactional and marketing emails. Marketing can be sent via SMTP, but senders must manage subscriptions and unsubscribes. Its dedicated marketing platform provides built-in campaign tools. All activity must follow Maileroo’s terms and sender policies; contact support if unsure.
Patrick Yammouni - 1 min read
Is there a sandbox or test environment for testing Maileroo?
Every Maileroo account includes a default sandbox domain, such as 2f008a4d61e0825a.maileroo.org, for testing API or SMTP implementations without sending email beyond approved test recipients. Sandbox domains support a limited list of up to seven recipients for outbound delivery tests.
Patrick Yammouni - 2 min read
What is test mode and how can I send emails without any limitations?
New Maileroo accounts begin in Test Mode, limited to 100 total emails and 7 unique recipients. To move to Production mode, add a domain and submit the account verification form. Reviews typically take up to 12 business hours, and compliance with the Spam Policy is required.
Patrick Yammouni - 2 min read
How do I add a Reply-To header to my email?
Direct email replies to a different address by setting a Reply-To header in your email software, editing the SMTP code or script, or using Maileroo with your existing provider. Add your domain, merge SPF records without creating MX records, create an account, and send as usual.
Patrick Yammouni - 3 min read
How do I configure the Return-Path address?
Configure a Return-Path for each Maileroo sending domain to handle bounces and delivery status notifications. Leave the field empty to use the recommended VERP behavior, or enter a custom local part for a consistent address. Changes may take about five minutes to take effect.
Patrick Yammouni - 4 min read
Understanding email compliance: CAN-SPAM, GDPR, and more
Email marketers must follow regional rules including CAN-SPAM, GDPR, CASL, and Australia’s Spam Act. Key practices include obtaining consent, identifying senders, using accurate subject lines, offering easy opt-outs, securing personal data, and honoring requests promptly.
Patrick Yammouni
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Get in touch with Maileroo support
Not everything makes it into the docs. Ask Joey AI and you'll usually have an answer in seconds, or open a ticket and our team will dig into your account, logs, and sending setup with you.