SMTP Configurations

Add multiple SMTP relays and test their socket handshake

Queue Checking...
2
Total SMTP Relays
2
Active Load-Balanced Relays
500
Combined Hourly Capacity
Outbound SMTP Server Profiles
SMTP Profile & Host Sender Identity Encryption & Port Speed Limit Rotation Weight Status Actions
Dollar25forall
mail.dollars25forall.com
Admin team
<kambg@dollars25forall.com>
SSL Port 465 300 / hr Weight: 1 Active
MARTI
mail.dollars25forall.com
Team
<Martitoth@dollars25forall.com>
SSL Port 465 200 / hr Weight: 1 Active
1-Click Auto-Fill Cloud & Local Server Presets:
Higher weight = higher proportion of emails sent through this server.
1 = Primary server. Lower priority servers (2, 3) act as failover backups.
Pause duration in seconds between sending consecutive emails (e.g. 2s or 5s).
Cancel

Every third-party email service has specific SMTP server endpoints, port security, API keys, and DNS authentication guidelines. Select a provider setup page below for step-by-step setup guides and 1-click configuration:

Maileroo SMTP Relay Setup Page

Featured Provider

High-deliverability transactional and bulk email relay engine with real-time domain verification.

Maileroo Dashboard
SMTP Host Server
smtp.maileroo.com
Supported Port & Encryption
Port 587 TLS / STARTTLS Port 465 SSL
Authentication Requirements
Username: Maileroo Username / Domain ID
Password: Maileroo SMTP API Key

How to Connect Maileroo with Apex Mailer:

  1. Log in to your Maileroo Portal at app.maileroo.com.
  2. Click Sending Domains from the left menu and add your domain (e.g. yourdomain.com).
  3. Copy the SPF and DKIM CNAME records shown in Maileroo and paste them into your DNS provider (Cloudflare, GoDaddy, Namecheap, etc.).
  4. Navigate to Settings -> SMTP Keys and click Generate New SMTP Key.
  5. Click the 1-Click Auto-Fill Maileroo Profile button above to populate default settings, enter your Maileroo Username & Key, then click Save Configuration.
Maileroo Mandatory DNS Deliverability Records
SPF Record (TXT):
v=spf1 include:maileroo.com ~all
DKIM Records (CNAME):

Publish the 2 unique DKIM CNAME selectors generated by Maileroo in your domain DNS manager.

DMARC Policy Record (TXT):
v=DMARC1; p=none; rua=mailto:dmarc-reports@yourdomain.com

Quickly verify a mail relay before saving. Enter details below to run a direct socket test:

An actual test email will be sent here to check SMTP authenticity.

Scan live DNS TXT records (SPF, DKIM, DMARC, MX) for any domain to audit deliverability rating:

Enter your live website domain URL (e.g. https://bulk.oceanofdollars.com). This URL is used to construct valid tracking pixels and unsubscribe links.
Inbox Deliverability & Anti-Spam Checklist
1. Set Up DNS Records (SPF & DKIM)

Gmail & Yahoo require SPF and DKIM TXT records on your sending domain (e.g. dollars25forall.com). Without these, receiving servers classify emails as unauthenticated spam.

TXT record: v=spf1 ip4:YOUR_SERVER_IP ~all
2. Matching "From Email" Domain

Your Sender From Email address (e.g. admin@dollars25forall.com) must strictly match your SMTP sending domain. Never use a @gmail.com address as your custom SMTP sender.

3. High-Quality Email Body Content

Avoid single-line test emails like "test" or "hello". Spam filters flag emails with very low text count, suspicious links, or missing HTML structure as potential phishing.